In UML-style E-R diagrams,a weak entity is shown by placing a filled-in diamond on the parent of the weak entity.

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Quizplus · Accepted Answer

This is true. In UML-style E-R diagrams, a weak entity is shown by placing a filled-in diamond on the parent of the weak entity. This diamond is called the "identifying relationship diamond" and indicates that the relationship between the weak entity and its parent is an identifying relationship, meaning that the weak entity's existence is dependent on its relationship with its parent entity.

In UML-Style E-R Diagrams,a Weak Entity Is Shown by Placing