SATHEE: Computer Science Ques 355

Computer Science Ques 355

Question: The primary key must be a(n)_____filed

Options:

A) Numeric

B) object

C) Related

D) unique

E) None of these

Show Answer

Answer:

Correct Answer: D

Solution:

The primary key of a relational table uniquely identifies each record or row in the table. For a table, it enables each record to be unique without ambiguity. That it, it doesn’t allow duplicates, eg. In a table CUSTOMERS, it is difficult to differentiate each on his name. Since homonyms May exist. Therefore it creates field code-client where each code is unique in designating It as primary key to ensure that. Every client is different.

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Computer Science Ques 355

Question: The primary key must be a(n)_____filed

Options:

Answer:

Solution:

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