DBMS-Relational Query Languages

DBMS-Relational Query Languages
41. QBE was originally developed by
  • Dr. E.F. Codd
  • M.M. Zloof
  • T.J. Watson
  • None of these
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42. What will be result of statement such as SELECT * FROM EMPLOYEE WHERE SALARY IN (4000, 8000)?
  • all employees whose salary is either 4000 or 8000.
  • all employees whose salary is between 4000 and 8000
  • all employees whose salary is not between 4000 and 8000
  • None of these
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43. Which of the following is not a DDL statement?
  • ALTER
  • DROP
  • CREATE
  • SELECT
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44. Which of the following is not a DCL statement
  • ROLLBACK
  • GRANT
  • REVOKE
  • None of these
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45. Which of the following is not a DML statement?
  • UPDATE
  • COMMIT
  • INSERT
  • DELETE
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