Which of the following is true? a. If you truncate a table, you cant add new data

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Which of the following is true?
a. If you truncate a table, you can’t add new data to the table.
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.
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.
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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Oracle 12c SQL

ISBN: 978-1305251038

3rd edition

Authors: Joan Casteel

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