diff --git a/realworld/amalgam/a1-to-a3.xml b/realworld/amalgam/a1-to-a3.xml
index e20c116..a1d4814 100644
--- a/realworld/amalgam/a1-to-a3.xml
+++ b/realworld/amalgam/a1-to-a3.xml
@@ -282,8 +282,8 @@
 <!--  ****************** Foreign Keys ************************** -->	
 
 		<ForeignKey id="AAtoarticle">
-			<From tableref="articleauthor"><Attr>bookid</Attr></From>
-			<To tableref="tarticle"><Attr>bookid</Attr></To>
+			<From tableref="articleauthor"><Attr>articleid</Attr></From>
+			<To tableref="tarticle"><Attr>articleid</Attr></To>
 		</ForeignKey>
 		<ForeignKey id="AAtoauthor">
 			<From tableref="articleauthor"><Attr>authorid</Attr></From>
diff --git a/udp/real-world/a1.xml b/udp/real-world/a1.xml
index ff0ff11..55d75ec 100644
--- a/udp/real-world/a1.xml
+++ b/udp/real-world/a1.xml
@@ -282,8 +282,8 @@
 <!--  ****************** Foreign Keys ************************** -->	
 
 		<ForeignKey id="AAtoarticle">
-			<From tableref="articleauthor"><Attr>bookid</Attr></From>
-			<To tableref="tarticle"><Attr>bookid</Attr></To>
+			<From tableref="articleauthor"><Attr>articleid</Attr></From>
+			<To tableref="tarticle"><Attr>articleid</Attr></To>
 		</ForeignKey>
 		<ForeignKey id="AAtoauthor">
 			<From tableref="articleauthor"><Attr>authorid</Attr></From>