Views (virtual Tables) in SQL: The
SQL DDL includes commands for defining views.A views is customized presentation
of the data from one or more tables. views derive their data from the tables on
which they are based, which are known as base ables of the view.
Non
procedural Language :SQL is a non procedural language because it:
·
Processess sets of records
rather than just one at a time
·
provides automatics navigation
to the data
· system administrators
·
Database administrators
·
Securiuty administrators
·
Application programmers
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