DDL

DDLData definition language. SQL statements that can be used either interactively or within programming language source code to define databases and their components.
DEMSee digital elevation model.

The logical model is the translation of the software independent conceptual model into a record structure defined in a particular Data Description Language (DDL).

Examples: DDL, DCL, DML, ODBC, and JDBC. Some vendors provide language specific proprietary interfaces. For example MySQL provides drivers for PHP, Python, etc.

Data definition language (DDL) - The language used in database management systems (DBMS) to set up databases. It allows the database administrator to define the components of the database using commands such as CREATE, DROP, ALTER and REVOKE.

See also: Query, Access, Platform, Element, Component