What is Data Definition Language DDL-01335
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Question 1: What is Data Definition Language (DDL)
Answer:
DDL
It deals with the structure of database.The DDL (Data Definition Language) allows specification of not only a set of relations, but also the following information for each relation:
- o The schema for each relation.
- o The domain of values associated with each attribute.
- o Integrity constraints.
- o The set of indices for each relation.
- o Security and authorization information.
- o Physical storage structure on disk.
The Data Definition Language (DDL) contains the commands used to create and destroy databases and database objects. After the database structure is defined with DDL, database administrators and users can utilize the Data Manipulation Language to insert, retrieve and modify the data contained within it.
