python Programming Glossary: choice_id
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy it is an option for. SystemVariables has a foreign key choice_id which states which option is the currently selected one. I've.. gotten around the circular relationship using use_alter on choice_id and post_update on SystemVariables ' choice relationship. However.. to add an extra database constraint that will ensure that choice_id is valid i.e. it's referring to an option that is referring..
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