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Database Interview Questions and Answers

Question - Enlist some commands of DDL.

Answer -

They are:

CREATE:

Create is used in the CREATE TABLE statement. Syntax is:

CREATE TABLE [column name] ( [column definitions] ) [ table parameters]
ALTER:
It helps in modification of an existing object of database. Its syntax is:

ALTER objecttype objectname parameters.
DROP:

It destroys an existing database, index, table or view. Its syntax is:

DROP objecttype objectname.

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