Which of the following statements is (are) correct?

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1. Which of the following statements is (are) correct?

  • a) Phsical level abstraction describes how a record is stored.
  • b) View level abstraction hides details of data types.
  • c) Physical level abstraction describes data stored in a database and their relationships.
  • d) Logical level abstraction defines the physical schema.
Answer :- b

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2. Consider the following relations:

Subject (sid, sname, credit)
Faculty (fid, sid)
Which of the following is correct?

  • a) RA1 C RAz
  • b) RAg C RAg
  • c) RAI C RAg
  • d) RA1 = RAg
Answer :- b
Course NameData Base Management System
CategoryNPTEL Assignment Answer
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