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Что (кто) такое data description language - определение
SYNTAX FOR DEFINING DATA STRUCTURES IN A DATABASE
Drop (SQL); Create (SQL); Alter (SQL); Create (sql); CREATE (SQL); Data Description Language; Data definition; Create sql; Drop sql; Data Definition Language; Sql drop; Drop database; Data definition language (SQL)
Data definition language
<language, database> (DDL)
1. A language enabling the structure and instances of a
database to be defined in a human-, and machine-readable
form.
SQL contains DDL commands that can be used either
interactively, or within programming language source code,
to define databases and their components, e.g. CREATE and
DROP.
See also Data manipulation language (DML).
2. A specification language for databases, based on the
entity-relationship model. It is used in the Eli
compiler-compiler to manage type definitions.
["DDL Reference Manual", ECE Dept U Colorado, 1991 ].
(1999-04-26)
Altera Hardware Description Language
PROPRIETARY HARDWARE DESCRIPTION LANGUAGE (HDL)
Altera hardware description language
Altera Hardware Description Language (AHDL) is a proprietary hardware description language (HDL) developed by Altera Corporation. AHDL is used for digital logic design entry for Altera's complex programmable logic devices (CPLDs) and field-programmable gate arrays (FPGAs).
Binary Format Description language
EXTENSION OF XSIL
Binary Format Description; Binary format description language
The Binary Format Description (BFD) language is an extension of XSIL which has added conditionals and the ability to reference files by their stream numbers, rather than by their public URLs. A template written in the BFD language can be applied to a binary data file to produce a file with that data formatted with descriptive XML tags.
Википедия
Data definition language
In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas. Common examples of DDL statements include CREATE, ALTER, and DROP.
