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Database Systems-5268-3-1st25
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In the following UML ER-Model, the recursive relationship is:
In the following UML ER-Model, if each course can have zero or more prerequisite courses, then the relationship between course and course is:
In the following UML ER-Model, if Y and n are more than 1, then the relationship between Course and Teacher is:
In the following ER-Model, the relationships are:
In the following UML ER-Model, the recursive relationship is:
Properties that describe the characteristics of entities are called:
In the following UML ER-Model, if Y and n are more than 1, then the relationship between Course and Teacher is:
Which type of entity cannot exist in the database unless another type of entity also exists in the database? |
A recursive relationship is a relationship between an entity and ________ .
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?