The _____ command is used to allocates an extent for the table in SQL A. MODIFY ALLOCATES B. MODIFY TABLE C. ALTER TABLE D. REDEFINE TABLE E. None of the above

The correct answer is: C. ALTER TABLE

The ALTER TABLE command is used to change the structure of a table. This can include adding or removing columns, changing the data type of a column, or changing the constraints on a column. The ALTER TABLE command can also be used to allocate an extent for a table. An extent is a contiguous block of storage that is used to store data for a table.

The MODIFY ALLOCATES command is not a valid SQL command. The MODIFY command is used to change the properties of a table, but it does not allow you to allocate an extent for the table. The MODIFY TABLE command is a synonym for the ALTER TABLE command. The REDEFINE TABLE command is used to completely redefine a table, including its structure and data.

Here is an example of how to use the ALTER TABLE command to allocate an extent for a table:

sql
ALTER TABLE my_table ALLOCATE EXTENT;

This command will allocate a new extent for the table my_table. The size of the extent will be determined by the table’s data type and the amount of data that is currently stored in the table.