tcl in sql

1SQL language is divided into four types
2of primary language statements: DML, DDL, DCL and TCL.
3 Using these statements,
4we can define the structure of a database by
5creating and altering database objects, and we can
6manipulate data in a table through
7updates or deletions.
8 We also can control which user can
9read/write data or manage transactions
10to create a single unit of work