| Data definition language (DDL) 1. A language enabling the structure and instances of a to be defined in a human-, and machine-readable form. contains DDL commands that can be used either interactively, or within programming language , to define databases and their components, e.g. CREATE and DROP. See also (DML). 2. A specification language for databases, based on the . It is used in the to manage type definitions. ["DDL Reference Manual", ECE Dept U Colorado, 1991]. (1999-04-26) |
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