Managing Databases with Oracle
Which of the following is not true about modifying table columns?

You cannot increase or decrease the number of decimal places.
You can add a column at any time as long as it is a NULL column.
You can increase the number of characters in character columns or the number of digits in numeric columns
You can drop a column at any time.

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Managing Databases with Oracle
Which of the following is not true of SQL views?

The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions.
Oracle views are created using the standard SQL-92 CREATE VIEW command.
Oracle views can by queried.
Oracle views cannot use the ORDER BY clause in view definitions.

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