• – Subset of SQL used to manipulate data in
databases
• – INSERT, DELETE, UPDATE statements
• – Subset of SQL used to describe database objects
• – CREATE, ALTER, DROP statements
• – Data types
• A data manipulation language (DML) is a family of syntax elements
similar to a computer programming .
• language used for selecting, inserting, deleting and updating data in
a database.
• A data definition language or data description language (DDL) is a
syntax similar to a computer programming language for defining
data structures, especially database objects.
• Syntax:
"Remove the Student from department":
• DELETE FROM Department
• WHERE DeptName = ‘Student’
DATA DEFINITION LANGUAGE
(DDL)
• DDL statements are used to build and
modify the structure of your tables and
other objects in the database.
• it is used to specify a database scheme as
a set of definitions.
• the Data Definition Language (DDL)
allows you to create, alter, and delete
database objects.
• Syntax:
• CREATE TABLE <name> (
• <list of elements>
• To Delete
• DROP TABLE <name>;
• To Alter
• To ALTER TABLE <name> ADD <element>
statements are used to define the
database structure or object.
statements are used for managing data
within objects.
Database Languges

Database Languges

  • 2.
    • – Subsetof SQL used to manipulate data in databases • – INSERT, DELETE, UPDATE statements • – Subset of SQL used to describe database objects • – CREATE, ALTER, DROP statements • – Data types
  • 3.
    • A datamanipulation language (DML) is a family of syntax elements similar to a computer programming . • language used for selecting, inserting, deleting and updating data in a database. • A data definition language or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database objects.
  • 6.
    • Syntax: "Remove theStudent from department": • DELETE FROM Department • WHERE DeptName = ‘Student’
  • 8.
    DATA DEFINITION LANGUAGE (DDL) •DDL statements are used to build and modify the structure of your tables and other objects in the database. • it is used to specify a database scheme as a set of definitions. • the Data Definition Language (DDL) allows you to create, alter, and delete database objects.
  • 9.
    • Syntax: • CREATETABLE <name> ( • <list of elements> • To Delete • DROP TABLE <name>; • To Alter • To ALTER TABLE <name> ADD <element>
  • 10.
    statements are usedto define the database structure or object. statements are used for managing data within objects.