diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/data/QField.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/data/QField.java
index c13b87f5..13ead81c 100644
--- a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/data/QField.java
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/data/QField.java
@@ -49,6 +49,11 @@ public @interface QField
     *******************************************************************************/
    String backendName() default "";
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   boolean isPrimaryKey() default false;
+
    /*******************************************************************************
     **
     *******************************************************************************/
diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QTableMetaData.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QTableMetaData.java
index a14fc566..99e52602 100644
--- a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QTableMetaData.java
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QTableMetaData.java
@@ -111,6 +111,7 @@ public class QTableMetaData implements QAppChildMetaData, Serializable, MetaData
    private ShareableTableMetaData shareableTableMetaData;
 
 
+
    /*******************************************************************************
     ** Default constructor.
     *******************************************************************************/
@@ -158,11 +159,26 @@ public class QTableMetaData implements QAppChildMetaData, Serializable, MetaData
    public QTableMetaData withFieldsFromEntity(Class<? extends QRecordEntity> entityClass) throws QException
    {
       List<QRecordEntityField> recordEntityFieldList = QRecordEntity.getFieldList(entityClass);
+
+      boolean setPrimaryKey = false;
+
       for(QRecordEntityField recordEntityField : recordEntityFieldList)
       {
          QFieldMetaData field = new QFieldMetaData(recordEntityField.getGetter());
          addField(field);
+
+         if(recordEntityField.getFieldAnnotation().isPrimaryKey())
+         {
+            if(setPrimaryKey)
+            {
+               throw (new QException("Attempt to set more than one field as primary key (" + primaryKeyField + "," + field.getName() + ")."));
+            }
+
+            setPrimaryKeyField(field.getName());
+            setPrimaryKey = true;
+         }
       }
+
       return (this);
    }
 
@@ -1388,6 +1404,7 @@ public class QTableMetaData implements QAppChildMetaData, Serializable, MetaData
    }
 
 
+
    /*******************************************************************************
     ** Getter for shareableTableMetaData
     *******************************************************************************/
@@ -1417,5 +1434,4 @@ public class QTableMetaData implements QAppChildMetaData, Serializable, MetaData
       return (this);
    }
 
-
 }