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Relational Model - Cannot Move Relationship Lines On SubView Diagram

littlecat
littlecat Member Posts: 122 Bronze Badge

I have relational model subview diagram, I am not able to perform actions on relationship line between tables such as move line, move endpoints. The right click menu has Straighten Line and Add Elbow dimmed out. Why are all these standard features disabled?

Eg for moving endpoint, I get cross hairs, but then endpoint does not move.

I followed instruction as per Jeff Smith article

Configuring Display of Model Relationships in Oracle SQL Developer Data Modeler (thatjeffsmith.com)

I can move tables around, so is not like diagram in locked/read only.

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