Question

Difference between DDL and DML commands.​

Answer 1

Answer:

difference between DDL and DML commands

Explanation:

DDL : DDL (DATA DAFINITION LANGUAGE) is used to specify the database schema database structure. On the other hand

DML : DML (DATA MANIPULATION LANGUAGE) is use to access , modify or retrieve the data from the database

Answer 2

DDL (Data Definition/Description Language):

• Data definition language is a standard for commands that define different structures in a database.
• DDL statements create, modify and remove database objects such as tables, indexes and users.

• Common DDL statements are:

1. Create (Create)
2. Alter (Modify)
3. Drop (Delete)

DML (Data Manipulation Language):

• Data manipulation language enables users to access and manipulate data in a database.
• Aim is to provide efficient human interaction with the system.
• It involves:

1. Select statement (Retrieval of information)
2. Insert statement (Insertion of information)
3. Delete statement (Deletion of information)
4. Update statement (Modification of information)

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