diff --git a/crates/migration/erm.drawio b/crates/migration/erm.drawio
index e0bfd75..906c93b 100644
--- a/crates/migration/erm.drawio
+++ b/crates/migration/erm.drawio
@@ -5,7 +5,7 @@
                 <mxCell id="0"/>
                 <mxCell id="1" parent="0"/>
                 <mxCell id="28" value="StudentGroupProject" style="shape=table;startSize=30;container=1;collapsible=1;childLayout=tableLayout;fixedRows=1;rowLines=0;fontStyle=1;align=center;resizeLast=1;html=1;whiteSpace=wrap;" parent="1" vertex="1">
-                    <mxGeometry x="650" y="380" width="210" height="180" as="geometry"/>
+                    <mxGeometry x="640" y="380" width="210" height="180" as="geometry"/>
                 </mxCell>
                 <mxCell id="29" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;fillColor=none;collapsible=0;dropTarget=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;top=0;left=0;right=0;bottom=0;html=1;" parent="28" vertex="1">
                     <mxGeometry y="30" width="210" height="30" as="geometry"/>
@@ -23,7 +23,7 @@
                 <mxCell id="32" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;fillColor=none;collapsible=0;dropTarget=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;top=0;left=0;right=0;bottom=0;html=1;strokeColor=default;" parent="28" vertex="1">
                     <mxGeometry y="60" width="210" height="30" as="geometry"/>
                 </mxCell>
-                <mxCell id="33" value="PK" style="shape=partialRectangle;connectable=0;fillColor=none;top=0;left=0;bottom=0;right=0;fontStyle=1;overflow=hidden;html=1;whiteSpace=wrap;" parent="32" vertex="1">
+                <mxCell id="33" value="PK, FK" style="shape=partialRectangle;connectable=0;fillColor=none;top=0;left=0;bottom=0;right=0;fontStyle=1;overflow=hidden;html=1;whiteSpace=wrap;" parent="32" vertex="1">
                     <mxGeometry width="60" height="30" as="geometry">
                         <mxRectangle width="60" height="30" as="alternateBounds"/>
                     </mxGeometry>
@@ -518,7 +518,7 @@
                     </mxGeometry>
                 </mxCell>
                 <mxCell id="209" value="SubProject" style="shape=table;startSize=30;container=1;collapsible=1;childLayout=tableLayout;fixedRows=1;rowLines=0;fontStyle=1;align=center;resizeLast=1;html=1;" vertex="1" parent="1">
-                    <mxGeometry x="360" y="720" width="180" height="150" as="geometry"/>
+                    <mxGeometry x="370" y="720" width="180" height="150" as="geometry"/>
                 </mxCell>
                 <mxCell id="234" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;fillColor=none;collapsible=0;dropTarget=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;top=0;left=0;right=0;bottom=1;" vertex="1" parent="209">
                     <mxGeometry y="30" width="180" height="30" as="geometry"/>
@@ -572,12 +572,12 @@
                         <mxRectangle width="130" height="30" as="alternateBounds"/>
                     </mxGeometry>
                 </mxCell>
-                <mxCell id="227" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" target="38">
+                <mxCell id="227" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="234" target="38">
                     <mxGeometry relative="1" as="geometry">
                         <mxPoint x="540" y="765" as="sourcePoint"/>
                         <Array as="points">
-                            <mxPoint x="590" y="765"/>
-                            <mxPoint x="590" y="545"/>
+                            <mxPoint x="600" y="765"/>
+                            <mxPoint x="600" y="545"/>
                         </Array>
                     </mxGeometry>
                 </mxCell>