Question
Which of the following statements are true about weak entity sets, why?: A. A weak entity set cannot have a primary key. B. A weak
Which of the following statements are true about weak entity sets, why?:
A. A weak entity set cannot have a primary key.
B. A weak entity set must have a local attribute in the primary key
C. A weak entity must borrow an attribute from another entity set to form a primary key.
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Statistical And Scientific Database Management International Working Conference Ssdbm Rome Italy June 21 23 1988 Proceedings Lncs 339
Authors: Maurizio Rafanelli ,John C. Klensin ,Per Svensson
1st Edition
354050575X, 978-3540505754
