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A. Supertype entity B. Subtype entity C. Archetype entity D. Instance entity AnswerOption: D
Read More »Database
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In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.
A. parent B. child C. instance D. subtype AnswerOption: A
Read More »Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
A. Weak entity B. Strong entity C. ID-dependent entity D. ID- independent entity AnswerOption: A
Read More »Which of the following indicates the maximum number of entities that can be involved in a relationship?
A. Minimum cardinality B. Maximum cardinality C. ERD D. Greater Entity Count (GEC) AnswerOption: B
Read More »Hierarchical model is also called
A. Tree structure B. Plex Structure C. Normalize Structure D. Table Structure AnswerOption: A
Read More »In E-R Diagram relationship type is represented by
A. Ellipse B. Dashed ellipse C. Rectangle D. Diamond AnswerOption: D
Read More »Which of the following statements is true about symmetric multiprocessing?
A. A single copy of the operating system resides in each processor. B. Useful for situations where data must remain in memory to process. C. Bottlenecks increase with uniprocessor systems because tasks are not shared. D. The problems of memory contention are unlikely. AnswerOption: B
Read More »The DBMS acts as an interface between what two components of an enterprise-class database system?
A. Database application and the database B. Data and the database C. The user and the database application D. Database application and SQL
Read More »Locks placed by command are called ________ .
A. implicit locks B. exclusive locks C. explicit locks D. shared locks
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