Analyzing Data › Defining Entity Types, Relationships, and Attributes › Defining Relationships › Associate Is Modifying or Referencing

Associate Is Modifying or Referencing

A property of each relationship membership, and defines whether procedure executions can simultaneously access an entity through that membership.

• Associate is modifying—Only one procedure execution at a time can access an entity through that membership, so allowing that entity to be updated or deleted.
• Associate is referencing—More than one procedure execution at a time can access an entity through that membership. This is safe providing no procedure execution allows that entity to be updated.

This property affects the behavior of the generated system, and probably let the system designer specify it and for system performance analysts to review. "Modifying" is the default in CA Gen model; this default is the safe setting for the integrity of the database.