Understanding Data Definition Language (DDL)

 

What is Data Definition Language (DDL)?





DDL is a programming language that plays a vital role in managing the structure of a database. Its main function is to create, modify and delete database objects like tables, indexes, and views. Using DDL statements, users can define the database schema by specifying the data types, constraints, and relationships between the objects.

Some common DDL statements include CREATE, ALTER, and DROP statements. CREATE is used to create new database objects, ALTER is used to modify an existing object, and DROP is used to remove an object from the database.

In essence, DDL is the go-to language for defining and maintaining a database's structure.








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