Examlex
An entity cluster is a "virtual" entity type used to represent multiple entities and relationships in the ERD.
Q8: Which of the following are not among
Q16: Identifying the attributes of entities helps in
Q22: A(n)is an orderly arrangement used to logically
Q46: Cash balance models are an example of
Q47: is a relational set operator.<br>A)MINUS<br>B)PLUS<br>C)ALL<br>D)EXISTS
Q49: What is a weak relationship? Provide an
Q61: Dependencies that are based on only a
Q64: Lock indicates the level of lock use.<br>A)granularity<br>B)shrinking<br>C)growing<br>D)serializability
Q74: Physical design becomes simpler when data is
Q79: The system's defines the extent of the