diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/AbstractDatabase.java b/jOOQ-meta/src/main/java/org/jooq/meta/AbstractDatabase.java
index 6e19bcc1c0..625be4c644 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/AbstractDatabase.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/AbstractDatabase.java
@@ -1198,7 +1198,7 @@ public abstract class AbstractDatabase implements Database {
             for (String syntheticPrimaryKey : syntheticPrimaryKeys) {
                 if (!StringUtils.isBlank(syntheticPrimaryKey)) {
                     log.warn("DEPRECATION", "The <syntheticPrimaryKeys/> configuration element has been deprecated in jOOQ 3.14. Use <syntheticObjects/> only, instead.");
-                    getConfiguredSyntheticPrimaryKeys().add(new SyntheticPrimaryKeyType().withKeyFields(syntheticPrimaryKey));
+                    getConfiguredSyntheticPrimaryKeys().add(new SyntheticPrimaryKeyType().withFields(syntheticPrimaryKey));
                 }
             }
         }
@@ -1238,7 +1238,7 @@ public abstract class AbstractDatabase implements Database {
             for (String syntheticIdentity : syntheticIdentities) {
                 if (!StringUtils.isBlank(syntheticIdentity)) {
                     log.warn("DEPRECATION", "The <syntheticIdentities/> configuration element has been deprecated in jOOQ 3.14. Use <syntheticObjects/> only, instead.");
-                    getConfiguredSyntheticIdentities().add(new SyntheticIdentityType().withKeyFields(syntheticIdentity));
+                    getConfiguredSyntheticIdentities().add(new SyntheticIdentityType().withFields(syntheticIdentity));
                 }
             }
         }
@@ -2603,6 +2603,15 @@ public abstract class AbstractDatabase implements Database {
         return filterExcludeInclude(definitions, null, include);
     }
 
+    protected final <T extends Definition> List<T> filter(List<T> definitions, List<String> include) {
+        List<T> result = new ArrayList<>();
+
+        for (String i : include)
+            result.addAll(filter(definitions, i));
+
+        return result;
+    }
+
     protected final <T extends Definition> List<T> filterExcludeInclude(List<T> definitions, String e, String i) {
         return filterExcludeInclude(definitions, new String[] { e }, new String[] { i != null ? i : ".*" }, Collections.<Filter>emptyList());
     }
@@ -2874,7 +2883,7 @@ public abstract class AbstractDatabase implements Database {
             if (key.getKey() == null)
                 continue keyLoop;
 
-            for (TableDefinition table : filter(getTables(), key.getKeyTables())) {
+            for (TableDefinition table : filter(getTables(), key.getTables())) {
                 for (UniqueKeyDefinition uk : filter(table.getUniqueKeys(), key.getKey())) {
                     log.info("Overriding primary key", "" + uk);
                     r.overridePrimaryKey(uk);
@@ -2891,10 +2900,10 @@ public abstract class AbstractDatabase implements Database {
             if (key.getKey() != null)
                 continue keyLoop;
 
-            for (TableDefinition table : filter(getTables(), key.getKeyTables())) {
+            for (TableDefinition table : filter(getTables(), key.getTables())) {
                 String keyName = key.getName() != null ? key.getName() : "SYNTHETIC_PK_" + table.getName();
 
-                List<ColumnDefinition> columns = filter(table.getColumns(), key.getKeyFields());
+                List<ColumnDefinition> columns = filter(table.getColumns(), key.getFields());
                 if (!columns.isEmpty()) {
                     markUsed(key);
 
@@ -2963,7 +2972,6 @@ public abstract class AbstractDatabase implements Database {
 
 
 
-
 
 
     @Override
diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/DefaultColumnDefinition.java b/jOOQ-meta/src/main/java/org/jooq/meta/DefaultColumnDefinition.java
index cdd1b44762..48e120b73c 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/DefaultColumnDefinition.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/DefaultColumnDefinition.java
@@ -78,8 +78,8 @@ public class DefaultColumnDefinition
         AbstractDatabase db = (AbstractDatabase) column.getDatabase();
 
         for (SyntheticIdentityType id : db.getConfiguredSyntheticIdentities()) {
-            for (TableDefinition t : db.filter(singletonList(column.getContainer()), id.getKeyTables())) {
-                for (ColumnDefinition c : db.filter(singletonList(column), id.getKeyFields())) {
+            for (TableDefinition t : db.filter(singletonList(column.getContainer()), id.getTables())) {
+                for (ColumnDefinition c : db.filter(singletonList(column), id.getFields())) {
                     log.info("Synthetic identity", column.getQualifiedName());
                     db.markUsed(id);
                     return true;
diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticForeignKeyType.java b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticForeignKeyType.java
index 3184aba223..6e51eeb243 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticForeignKeyType.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticForeignKeyType.java
@@ -2,9 +2,13 @@
 package org.jooq.meta.jaxb;
 
 import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlElementWrapper;
 import javax.xml.bind.annotation.XmlType;
 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 import org.jooq.util.jaxb.tools.StringAdapter;
@@ -23,10 +27,10 @@ import org.jooq.util.jaxb.tools.XMLBuilder;
  *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"&gt;
  *       &lt;all&gt;
  *         &lt;element name="name" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyTables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyFields" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
+ *         &lt;element name="tables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
+ *         &lt;element name="fields" type="{http://www.jooq.org/xsd/jooq-codegen-3.13.0.xsd}SyntheticKeyFieldsType"/&gt;
  *         &lt;element name="referencedTable" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
- *         &lt;element name="referencedFields" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
+ *         &lt;element name="referencedFields" type="{http://www.jooq.org/xsd/jooq-codegen-3.13.0.xsd}SyntheticKeyFieldsType" minOccurs="0"/&gt;
  *         &lt;element name="referencedKey" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
  *       &lt;/all&gt;
  *     &lt;/restriction&gt;
@@ -50,17 +54,18 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
     @XmlJavaTypeAdapter(StringAdapter.class)
     protected String name;
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyTables;
-    @XmlElement(required = true)
-    @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyFields;
+    protected String tables;
     @XmlElement(required = true)
     @XmlJavaTypeAdapter(StringAdapter.class)
     protected String referencedTable;
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String referencedFields;
-    @XmlJavaTypeAdapter(StringAdapter.class)
     protected String referencedKey;
+    @XmlElementWrapper(name = "fields", required = true)
+    @XmlElement(name = "field")
+    protected List<String> fields;
+    @XmlElementWrapper(name = "referencedFields")
+    @XmlElement(name = "field")
+    protected List<String> referencedFields;
 
     /**
      * The optional foreign key name.
@@ -82,32 +87,16 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic foreign key.
      * 
      */
-    public String getKeyTables() {
-        return keyTables;
+    public String getTables() {
+        return tables;
     }
 
     /**
      * A regular expression matching all tables on which to apply this synthetic foreign key.
      * 
      */
-    public void setKeyTables(String value) {
-        this.keyTables = value;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this synthetic foreign key.
-     * 
-     */
-    public String getKeyFields() {
-        return keyFields;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this synthetic foreign key.
-     * 
-     */
-    public void setKeyFields(String value) {
-        this.keyFields = value;
+    public void setTables(String value) {
+        this.tables = value;
     }
 
     /**
@@ -126,22 +115,6 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
         this.referencedTable = value;
     }
 
-    /**
-     * A regular expression matching fields that are referenced by this synthetic foreign key.
-     * 
-     */
-    public String getReferencedFields() {
-        return referencedFields;
-    }
-
-    /**
-     * A regular expression matching fields that are referenced by this synthetic foreign key.
-     * 
-     */
-    public void setReferencedFields(String value) {
-        this.referencedFields = value;
-    }
-
     /**
      * A regular expression matching a key that is referenced by this synthetic foreign key.
      * 
@@ -158,6 +131,28 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
         this.referencedKey = value;
     }
 
+    public List<String> getFields() {
+        if (fields == null) {
+            fields = new ArrayList<String>();
+        }
+        return fields;
+    }
+
+    public void setFields(List<String> fields) {
+        this.fields = fields;
+    }
+
+    public List<String> getReferencedFields() {
+        if (referencedFields == null) {
+            referencedFields = new ArrayList<String>();
+        }
+        return referencedFields;
+    }
+
+    public void setReferencedFields(List<String> referencedFields) {
+        this.referencedFields = referencedFields;
+    }
+
     /**
      * The optional foreign key name.
      * 
@@ -171,17 +166,8 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic foreign key.
      * 
      */
-    public SyntheticForeignKeyType withKeyTables(String value) {
-        setKeyTables(value);
-        return this;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this synthetic foreign key.
-     * 
-     */
-    public SyntheticForeignKeyType withKeyFields(String value) {
-        setKeyFields(value);
+    public SyntheticForeignKeyType withTables(String value) {
+        setTables(value);
         return this;
     }
 
@@ -194,15 +180,6 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
         return this;
     }
 
-    /**
-     * A regular expression matching fields that are referenced by this synthetic foreign key.
-     * 
-     */
-    public SyntheticForeignKeyType withReferencedFields(String value) {
-        setReferencedFields(value);
-        return this;
-    }
-
     /**
      * A regular expression matching a key that is referenced by this synthetic foreign key.
      * 
@@ -212,14 +189,56 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
         return this;
     }
 
+    public SyntheticForeignKeyType withFields(String... values) {
+        if (values!= null) {
+            for (String value: values) {
+                getFields().add(value);
+            }
+        }
+        return this;
+    }
+
+    public SyntheticForeignKeyType withFields(Collection<String> values) {
+        if (values!= null) {
+            getFields().addAll(values);
+        }
+        return this;
+    }
+
+    public SyntheticForeignKeyType withFields(List<String> fields) {
+        setFields(fields);
+        return this;
+    }
+
+    public SyntheticForeignKeyType withReferencedFields(String... values) {
+        if (values!= null) {
+            for (String value: values) {
+                getReferencedFields().add(value);
+            }
+        }
+        return this;
+    }
+
+    public SyntheticForeignKeyType withReferencedFields(Collection<String> values) {
+        if (values!= null) {
+            getReferencedFields().addAll(values);
+        }
+        return this;
+    }
+
+    public SyntheticForeignKeyType withReferencedFields(List<String> referencedFields) {
+        setReferencedFields(referencedFields);
+        return this;
+    }
+
     @Override
     public final void appendTo(XMLBuilder builder) {
         builder.append("name", name);
-        builder.append("keyTables", keyTables);
-        builder.append("keyFields", keyFields);
+        builder.append("tables", tables);
         builder.append("referencedTable", referencedTable);
-        builder.append("referencedFields", referencedFields);
         builder.append("referencedKey", referencedKey);
+        builder.append("fields", "field", fields);
+        builder.append("referencedFields", "field", referencedFields);
     }
 
     @Override
@@ -250,21 +269,12 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
-        if (keyTables == null) {
-            if (other.keyTables!= null) {
+        if (tables == null) {
+            if (other.tables!= null) {
                 return false;
             }
         } else {
-            if (!keyTables.equals(other.keyTables)) {
-                return false;
-            }
-        }
-        if (keyFields == null) {
-            if (other.keyFields!= null) {
-                return false;
-            }
-        } else {
-            if (!keyFields.equals(other.keyFields)) {
+            if (!tables.equals(other.tables)) {
                 return false;
             }
         }
@@ -277,15 +287,6 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
-        if (referencedFields == null) {
-            if (other.referencedFields!= null) {
-                return false;
-            }
-        } else {
-            if (!referencedFields.equals(other.referencedFields)) {
-                return false;
-            }
-        }
         if (referencedKey == null) {
             if (other.referencedKey!= null) {
                 return false;
@@ -295,6 +296,24 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
+        if (fields == null) {
+            if (other.fields!= null) {
+                return false;
+            }
+        } else {
+            if (!fields.equals(other.fields)) {
+                return false;
+            }
+        }
+        if (referencedFields == null) {
+            if (other.referencedFields!= null) {
+                return false;
+            }
+        } else {
+            if (!referencedFields.equals(other.referencedFields)) {
+                return false;
+            }
+        }
         return true;
     }
 
@@ -303,11 +322,11 @@ public class SyntheticForeignKeyType implements Serializable, XMLAppendable
         final int prime = 31;
         int result = 1;
         result = ((prime*result)+((name == null)? 0 :name.hashCode()));
-        result = ((prime*result)+((keyTables == null)? 0 :keyTables.hashCode()));
-        result = ((prime*result)+((keyFields == null)? 0 :keyFields.hashCode()));
+        result = ((prime*result)+((tables == null)? 0 :tables.hashCode()));
         result = ((prime*result)+((referencedTable == null)? 0 :referencedTable.hashCode()));
-        result = ((prime*result)+((referencedFields == null)? 0 :referencedFields.hashCode()));
         result = ((prime*result)+((referencedKey == null)? 0 :referencedKey.hashCode()));
+        result = ((prime*result)+((fields == null)? 0 :fields.hashCode()));
+        result = ((prime*result)+((referencedFields == null)? 0 :referencedFields.hashCode()));
         return result;
     }
 
diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticIdentityType.java b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticIdentityType.java
index a1949cae89..f1e2ec3e81 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticIdentityType.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticIdentityType.java
@@ -22,8 +22,8 @@ import org.jooq.util.jaxb.tools.XMLBuilder;
  *   &lt;complexContent&gt;
  *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"&gt;
  *       &lt;all&gt;
- *         &lt;element name="keyTables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyFields" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
+ *         &lt;element name="tables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
+ *         &lt;element name="fields" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
  *       &lt;/all&gt;
  *     &lt;/restriction&gt;
  *   &lt;/complexContent&gt;
@@ -44,49 +44,49 @@ public class SyntheticIdentityType implements Serializable, XMLAppendable
 
     private final static long serialVersionUID = 31400L;
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyTables;
+    protected String tables;
     @XmlElement(required = true)
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyFields;
+    protected String fields;
 
     /**
      * A regular expression matching all tables on which to apply this synthetic identity.
      * 
      */
-    public String getKeyTables() {
-        return keyTables;
+    public String getTables() {
+        return tables;
     }
 
     /**
      * A regular expression matching all tables on which to apply this synthetic identity.
      * 
      */
-    public void setKeyTables(String value) {
-        this.keyTables = value;
+    public void setTables(String value) {
+        this.tables = value;
     }
 
     /**
      * A regular expression matching all fields on which to apply this synthetic identity.
      * 
      */
-    public String getKeyFields() {
-        return keyFields;
+    public String getFields() {
+        return fields;
     }
 
     /**
      * A regular expression matching all fields on which to apply this synthetic identity.
      * 
      */
-    public void setKeyFields(String value) {
-        this.keyFields = value;
+    public void setFields(String value) {
+        this.fields = value;
     }
 
     /**
      * A regular expression matching all tables on which to apply this synthetic identity.
      * 
      */
-    public SyntheticIdentityType withKeyTables(String value) {
-        setKeyTables(value);
+    public SyntheticIdentityType withTables(String value) {
+        setTables(value);
         return this;
     }
 
@@ -94,15 +94,15 @@ public class SyntheticIdentityType implements Serializable, XMLAppendable
      * A regular expression matching all fields on which to apply this synthetic identity.
      * 
      */
-    public SyntheticIdentityType withKeyFields(String value) {
-        setKeyFields(value);
+    public SyntheticIdentityType withFields(String value) {
+        setFields(value);
         return this;
     }
 
     @Override
     public final void appendTo(XMLBuilder builder) {
-        builder.append("keyTables", keyTables);
-        builder.append("keyFields", keyFields);
+        builder.append("tables", tables);
+        builder.append("fields", fields);
     }
 
     @Override
@@ -124,21 +124,21 @@ public class SyntheticIdentityType implements Serializable, XMLAppendable
             return false;
         }
         SyntheticIdentityType other = ((SyntheticIdentityType) that);
-        if (keyTables == null) {
-            if (other.keyTables!= null) {
+        if (tables == null) {
+            if (other.tables!= null) {
                 return false;
             }
         } else {
-            if (!keyTables.equals(other.keyTables)) {
+            if (!tables.equals(other.tables)) {
                 return false;
             }
         }
-        if (keyFields == null) {
-            if (other.keyFields!= null) {
+        if (fields == null) {
+            if (other.fields!= null) {
                 return false;
             }
         } else {
-            if (!keyFields.equals(other.keyFields)) {
+            if (!fields.equals(other.fields)) {
                 return false;
             }
         }
@@ -149,8 +149,8 @@ public class SyntheticIdentityType implements Serializable, XMLAppendable
     public int hashCode() {
         final int prime = 31;
         int result = 1;
-        result = ((prime*result)+((keyTables == null)? 0 :keyTables.hashCode()));
-        result = ((prime*result)+((keyFields == null)? 0 :keyFields.hashCode()));
+        result = ((prime*result)+((tables == null)? 0 :tables.hashCode()));
+        result = ((prime*result)+((fields == null)? 0 :fields.hashCode()));
         return result;
     }
 
diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticPrimaryKeyType.java b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticPrimaryKeyType.java
index e5d6587142..923f2d8460 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticPrimaryKeyType.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticPrimaryKeyType.java
@@ -2,9 +2,13 @@
 package org.jooq.meta.jaxb;
 
 import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlElementWrapper;
 import javax.xml.bind.annotation.XmlType;
 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 import org.jooq.util.jaxb.tools.StringAdapter;
@@ -23,8 +27,8 @@ import org.jooq.util.jaxb.tools.XMLBuilder;
  *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"&gt;
  *       &lt;all&gt;
  *         &lt;element name="name" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyTables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyFields" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
+ *         &lt;element name="tables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
+ *         &lt;element name="fields" type="{http://www.jooq.org/xsd/jooq-codegen-3.13.0.xsd}SyntheticKeyFieldsType"/&gt;
  *         &lt;element name="key" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
  *       &lt;/all&gt;
  *     &lt;/restriction&gt;
@@ -48,12 +52,12 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
     @XmlJavaTypeAdapter(StringAdapter.class)
     protected String name;
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyTables;
-    @XmlElement(required = true)
-    @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyFields;
+    protected String tables;
     @XmlJavaTypeAdapter(StringAdapter.class)
     protected String key;
+    @XmlElementWrapper(name = "fields", required = true)
+    @XmlElement(name = "field")
+    protected List<String> fields;
 
     /**
      * The optional primary key name.
@@ -75,32 +79,16 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic primary key.
      * 
      */
-    public String getKeyTables() {
-        return keyTables;
+    public String getTables() {
+        return tables;
     }
 
     /**
      * A regular expression matching all tables on which to apply this synthetic primary key.
      * 
      */
-    public void setKeyTables(String value) {
-        this.keyTables = value;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this new synthetic primary key.
-     * 
-     */
-    public String getKeyFields() {
-        return keyFields;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this new synthetic primary key.
-     * 
-     */
-    public void setKeyFields(String value) {
-        this.keyFields = value;
+    public void setTables(String value) {
+        this.tables = value;
     }
 
     /**
@@ -119,6 +107,17 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
         this.key = value;
     }
 
+    public List<String> getFields() {
+        if (fields == null) {
+            fields = new ArrayList<String>();
+        }
+        return fields;
+    }
+
+    public void setFields(List<String> fields) {
+        this.fields = fields;
+    }
+
     /**
      * The optional primary key name.
      * 
@@ -132,17 +131,8 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic primary key.
      * 
      */
-    public SyntheticPrimaryKeyType withKeyTables(String value) {
-        setKeyTables(value);
-        return this;
-    }
-
-    /**
-     * A regular expression matching all fields on which to apply this new synthetic primary key.
-     * 
-     */
-    public SyntheticPrimaryKeyType withKeyFields(String value) {
-        setKeyFields(value);
+    public SyntheticPrimaryKeyType withTables(String value) {
+        setTables(value);
         return this;
     }
 
@@ -155,12 +145,33 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
         return this;
     }
 
+    public SyntheticPrimaryKeyType withFields(String... values) {
+        if (values!= null) {
+            for (String value: values) {
+                getFields().add(value);
+            }
+        }
+        return this;
+    }
+
+    public SyntheticPrimaryKeyType withFields(Collection<String> values) {
+        if (values!= null) {
+            getFields().addAll(values);
+        }
+        return this;
+    }
+
+    public SyntheticPrimaryKeyType withFields(List<String> fields) {
+        setFields(fields);
+        return this;
+    }
+
     @Override
     public final void appendTo(XMLBuilder builder) {
         builder.append("name", name);
-        builder.append("keyTables", keyTables);
-        builder.append("keyFields", keyFields);
+        builder.append("tables", tables);
         builder.append("key", key);
+        builder.append("fields", "field", fields);
     }
 
     @Override
@@ -191,21 +202,12 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
-        if (keyTables == null) {
-            if (other.keyTables!= null) {
+        if (tables == null) {
+            if (other.tables!= null) {
                 return false;
             }
         } else {
-            if (!keyTables.equals(other.keyTables)) {
-                return false;
-            }
-        }
-        if (keyFields == null) {
-            if (other.keyFields!= null) {
-                return false;
-            }
-        } else {
-            if (!keyFields.equals(other.keyFields)) {
+            if (!tables.equals(other.tables)) {
                 return false;
             }
         }
@@ -218,6 +220,15 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
+        if (fields == null) {
+            if (other.fields!= null) {
+                return false;
+            }
+        } else {
+            if (!fields.equals(other.fields)) {
+                return false;
+            }
+        }
         return true;
     }
 
@@ -226,9 +237,9 @@ public class SyntheticPrimaryKeyType implements Serializable, XMLAppendable
         final int prime = 31;
         int result = 1;
         result = ((prime*result)+((name == null)? 0 :name.hashCode()));
-        result = ((prime*result)+((keyTables == null)? 0 :keyTables.hashCode()));
-        result = ((prime*result)+((keyFields == null)? 0 :keyFields.hashCode()));
+        result = ((prime*result)+((tables == null)? 0 :tables.hashCode()));
         result = ((prime*result)+((key == null)? 0 :key.hashCode()));
+        result = ((prime*result)+((fields == null)? 0 :fields.hashCode()));
         return result;
     }
 
diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticUniqueKeyType.java b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticUniqueKeyType.java
index f591c346aa..a94fa6edbf 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticUniqueKeyType.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/jaxb/SyntheticUniqueKeyType.java
@@ -2,9 +2,13 @@
 package org.jooq.meta.jaxb;
 
 import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlElementWrapper;
 import javax.xml.bind.annotation.XmlType;
 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 import org.jooq.util.jaxb.tools.StringAdapter;
@@ -23,8 +27,8 @@ import org.jooq.util.jaxb.tools.XMLBuilder;
  *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType"&gt;
  *       &lt;all&gt;
  *         &lt;element name="name" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyTables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
- *         &lt;element name="keyFields" type="{http://www.w3.org/2001/XMLSchema}string"/&gt;
+ *         &lt;element name="tables" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/&gt;
+ *         &lt;element name="fields" type="{http://www.jooq.org/xsd/jooq-codegen-3.13.0.xsd}SyntheticKeyFieldsType"/&gt;
  *       &lt;/all&gt;
  *     &lt;/restriction&gt;
  *   &lt;/complexContent&gt;
@@ -47,10 +51,10 @@ public class SyntheticUniqueKeyType implements Serializable, XMLAppendable
     @XmlJavaTypeAdapter(StringAdapter.class)
     protected String name;
     @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyTables;
-    @XmlElement(required = true)
-    @XmlJavaTypeAdapter(StringAdapter.class)
-    protected String keyFields;
+    protected String tables;
+    @XmlElementWrapper(name = "fields", required = true)
+    @XmlElement(name = "field")
+    protected List<String> fields;
 
     /**
      * The optional unique key name.
@@ -72,32 +76,27 @@ public class SyntheticUniqueKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic unique key.
      * 
      */
-    public String getKeyTables() {
-        return keyTables;
+    public String getTables() {
+        return tables;
     }
 
     /**
      * A regular expression matching all tables on which to apply this synthetic unique key.
      * 
      */
-    public void setKeyTables(String value) {
-        this.keyTables = value;
+    public void setTables(String value) {
+        this.tables = value;
     }
 
-    /**
-     * A regular expression matching all fields on which to apply this synthetic unique key.
-     * 
-     */
-    public String getKeyFields() {
-        return keyFields;
+    public List<String> getFields() {
+        if (fields == null) {
+            fields = new ArrayList<String>();
+        }
+        return fields;
     }
 
-    /**
-     * A regular expression matching all fields on which to apply this synthetic unique key.
-     * 
-     */
-    public void setKeyFields(String value) {
-        this.keyFields = value;
+    public void setFields(List<String> fields) {
+        this.fields = fields;
     }
 
     /**
@@ -113,25 +112,37 @@ public class SyntheticUniqueKeyType implements Serializable, XMLAppendable
      * A regular expression matching all tables on which to apply this synthetic unique key.
      * 
      */
-    public SyntheticUniqueKeyType withKeyTables(String value) {
-        setKeyTables(value);
+    public SyntheticUniqueKeyType withTables(String value) {
+        setTables(value);
         return this;
     }
 
-    /**
-     * A regular expression matching all fields on which to apply this synthetic unique key.
-     * 
-     */
-    public SyntheticUniqueKeyType withKeyFields(String value) {
-        setKeyFields(value);
+    public SyntheticUniqueKeyType withFields(String... values) {
+        if (values!= null) {
+            for (String value: values) {
+                getFields().add(value);
+            }
+        }
+        return this;
+    }
+
+    public SyntheticUniqueKeyType withFields(Collection<String> values) {
+        if (values!= null) {
+            getFields().addAll(values);
+        }
+        return this;
+    }
+
+    public SyntheticUniqueKeyType withFields(List<String> fields) {
+        setFields(fields);
         return this;
     }
 
     @Override
     public final void appendTo(XMLBuilder builder) {
         builder.append("name", name);
-        builder.append("keyTables", keyTables);
-        builder.append("keyFields", keyFields);
+        builder.append("tables", tables);
+        builder.append("fields", "field", fields);
     }
 
     @Override
@@ -162,21 +173,21 @@ public class SyntheticUniqueKeyType implements Serializable, XMLAppendable
                 return false;
             }
         }
-        if (keyTables == null) {
-            if (other.keyTables!= null) {
+        if (tables == null) {
+            if (other.tables!= null) {
                 return false;
             }
         } else {
-            if (!keyTables.equals(other.keyTables)) {
+            if (!tables.equals(other.tables)) {
                 return false;
             }
         }
-        if (keyFields == null) {
-            if (other.keyFields!= null) {
+        if (fields == null) {
+            if (other.fields!= null) {
                 return false;
             }
         } else {
-            if (!keyFields.equals(other.keyFields)) {
+            if (!fields.equals(other.fields)) {
                 return false;
             }
         }
@@ -188,8 +199,8 @@ public class SyntheticUniqueKeyType implements Serializable, XMLAppendable
         final int prime = 31;
         int result = 1;
         result = ((prime*result)+((name == null)? 0 :name.hashCode()));
-        result = ((prime*result)+((keyTables == null)? 0 :keyTables.hashCode()));
-        result = ((prime*result)+((keyFields == null)? 0 :keyFields.hashCode()));
+        result = ((prime*result)+((tables == null)? 0 :tables.hashCode()));
+        result = ((prime*result)+((fields == null)? 0 :fields.hashCode()));
         return result;
     }
 
diff --git a/jOOQ-meta/src/main/resources/xsd/jooq-codegen-3.14.0.xsd b/jOOQ-meta/src/main/resources/xsd/jooq-codegen-3.14.0.xsd
index 65b9fa2a84..23c089833b 100644
--- a/jOOQ-meta/src/main/resources/xsd/jooq-codegen-3.14.0.xsd
+++ b/jOOQ-meta/src/main/resources/xsd/jooq-codegen-3.14.0.xsd
@@ -945,11 +945,11 @@ for Oracle.]]></jxb:javadoc></jxb:property></appinfo></annotation>
   <complexType name="SyntheticIdentityType">
     <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[Synthetic identity configuration]]></jxb:javadoc></jxb:property></appinfo></annotation>
     <all>
-      <element name="keyTables" type="string" minOccurs="0" maxOccurs="1">
+      <element name="tables" type="string" minOccurs="0" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all tables on which to apply this synthetic identity.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyFields" type="string" minOccurs="1" maxOccurs="1">
+      <element name="fields" type="string" minOccurs="1" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all fields on which to apply this synthetic identity.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
     </all>
@@ -968,12 +968,12 @@ for Oracle.]]></jxb:javadoc></jxb:property></appinfo></annotation>
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[The optional primary key name.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyTables" type="string" minOccurs="0" maxOccurs="1">
+      <element name="tables" type="string" minOccurs="0" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all tables on which to apply this synthetic primary key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyFields" type="string" minOccurs="1" maxOccurs="1">
-        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all fields on which to apply this new synthetic primary key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
+      <element name="fields" type="tns:SyntheticKeyFieldsType" minOccurs="1" maxOccurs="1">
+        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A set of regular expressions matching all fields in order on which to apply this new synthetic primary key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
       
       <element name="key" type="string" minOccurs="0" maxOccurs="1">
@@ -995,12 +995,12 @@ for Oracle.]]></jxb:javadoc></jxb:property></appinfo></annotation>
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[The optional unique key name.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyTables" type="string" minOccurs="0" maxOccurs="1">
+      <element name="tables" type="string" minOccurs="0" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all tables on which to apply this synthetic unique key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyFields" type="string" minOccurs="1" maxOccurs="1">
-        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all fields on which to apply this synthetic unique key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
+      <element name="fields" type="tns:SyntheticKeyFieldsType" minOccurs="1" maxOccurs="1">
+        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A set of regular expressions matching all fields in order on which to apply this synthetic unique key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
     </all>
   </complexType>
@@ -1018,20 +1018,20 @@ for Oracle.]]></jxb:javadoc></jxb:property></appinfo></annotation>
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[The optional foreign key name.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyTables" type="string" minOccurs="0" maxOccurs="1">
+      <element name="tables" type="string" minOccurs="0" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all tables on which to apply this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="keyFields" type="string" minOccurs="1" maxOccurs="1">
-        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching all fields on which to apply this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
+      <element name="fields" type="tns:SyntheticKeyFieldsType" minOccurs="1" maxOccurs="1">
+        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A set of regular expressions matching fields in order on which to apply this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
       <element name="referencedTable" type="string" minOccurs="1" maxOccurs="1">
         <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching a table that is referenced by this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
-      <element name="referencedFields" type="string" minOccurs="0" maxOccurs="1">
-        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching fields that are referenced by this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
+      <element name="referencedFields" type="tns:SyntheticKeyFieldsType" minOccurs="0" maxOccurs="1">
+        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A set regular of regular expressions matching fields in order that are referenced by this synthetic foreign key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
 
       <element name="referencedKey" type="string" minOccurs="0" maxOccurs="1">
@@ -1039,7 +1039,15 @@ for Oracle.]]></jxb:javadoc></jxb:property></appinfo></annotation>
       </element>
     </all>
   </complexType>
-
+  
+  <complexType name="SyntheticKeyFieldsType">
+    <sequence>
+      <element name="field" type="string" minOccurs="1" maxOccurs="unbounded">
+        <annotation><appinfo><jxb:property><jxb:javadoc><![CDATA[A regular expression matching a key field that is referenced by a synthetic key.]]></jxb:javadoc></jxb:property></appinfo></annotation>
+      </element>
+    </sequence>
+  </complexType>
+  
   <complexType name="CatalogMappingsType">
     <sequence>
       <element name="catalog" type="tns:CatalogMappingType" minOccurs="1" maxOccurs="unbounded"/>