18. The SQL WHERE clause: limits the column data that are returned. b) limits the row data returned. Both A and B are correct. d) Neither A nor B is correct. 19. Which of the following is the original purpose of SQL? a) To specify the syntax and semantics of SQL data definition language To specify the syntax and semantics of SQL manipulation language To define the data structures b) d) All of the above.​

Answer:

18. The correct answer is b) limits the row data returned.

19. The correct answer is b) To specify the syntax and semantics of SQL-manipulation language.