A database schema is specified by a set of definitions expressed by a special language called a Data Definition Language.
One of four parts of a database management system (DBMS) used to define the structure of the database.
Or database design language, data design language. A language, usually a part of a database management system, that defines all attributes and properties of a database, especially record layouts, field definitions, key fields (and, sometimes, keying methodology), file locations, and storage strategy.
DDL is used for data entry, or to create, change and delete basic database elements such as tables, views, schemas, etc. The actual basic commands in DDL are CREATE,ALTER, and DROP. DDL addresses the structure of the database.
DDL) The subset of SQL used for defining and examining the structure of a database.
One of the components of SQL. DDL is concerned with commands that create and maintain the database, for example, Create Table and Drop Table.
A language, usually a part of a database management system, that is used to define all attributes and properties of a database, especially row layouts, column definitions, key columns (and, sometimes, keying methodology), file locations, and storage strategy.
The data definition part of the structured query language (SQL). OracleAS TopLink Mapping Workbench can generate DDL creation scripts that can be used to create tables on the desired database.
DDL is the subset of SQL commands used to define tables, columns, indices, data space, etc.
(SQL) Statements to create and modify tables and other database objects. ddldml.php
The subset of SQL statements for modeling the structure of a database. DDL statements create, modify, and remove database objects, including users.
This is the syntax that a given DBMS understands, and is used to manipulate the structure of the database, from initial database creation to additions, modifications and deletions of all database objects (tables, columns, indexes etc.) to the eventual removal of the database. Another term used for DDL is 'schema'. Because each DBMS is slightly different, the DDL statements that each use is also different, sometimes completely alien to each other.
A language for describing data and its relationships in a database.
The category of SQL statements that define or delete database objects such as tables or views. Examples are the CREATE, ALTER, and DROP statements.
A language enabling the structure and instances of a database to be defined in a human- and machine-readable form.
A Data Definition Language (DDL) is a computer language for defining data. XML Schema is an example of a pure DDL (although only relevant in the context of XML). A subset of SQL's instructions form another DDL.
