diff --git a/code/common/db/readme.md b/code/common/db/readme.md
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--- a/code/common/db/readme.md
+++ b/code/common/db/readme.md
@@ -29,9 +29,3 @@ incorporates the project's cal-ver versioning; and are applied in lexicographica
 ## See Also 
 
 * [common/service](../service) implements DatabaseModule, which is from where the services get database connections.
-
-## Relation diagrams for EC_DOMAIN and EC_URL
-
-![image](../../../doc/sql/er-diagram-domain.png)
-
-![image](../../../doc/sql/er-diagram-url.png)
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diff --git a/doc/sql/er-diagram-url.png b/doc/sql/er-diagram-url.png
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