Oracle 12c: SQL
Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 3, Problem 5MC

Which of the following is true?

  1. a. If you truncate a table, you can’t add new data to the table.
  2. b. If you change the default value of an existing column, all existing rows containing a NULL value in the same column are set to the new DEFAULT value.
  3. c. If you delete a column from a table, you can’t add a column to the table with the same name as the previously deleted column.
  4. d. If you add a column to an existing table, it’s always added as the last column of the table.
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