What is the primary function of Data Definition Language (DDL)?

The primary function of Data Definition Language (DDL) is to create and modify the structure of database objects. DDL commands allow users to define the schema of a database, which includes creating, altering, and deleting tables, indexes, and constraints. For example, when you create a new table in a database, you use a DDL statement to specify the table's name, its columns, and the types of data that can be stored in each column.

By focusing on the structure of data, DDL plays a crucial role in database design and implementation, ensuring that the database can effectively store and manage the data it contains. Commands like CREATE, ALTER, and DROP are integral parts of DDL, and they help database administrators and developers shape how data is organized and structured.