Data-Schema Definition Language

A Data-Schema Definition Language is a data modeling language for the creation of database object schemas.

• AKA: Data Definition Language, DDL.
• Context:
  • It can be used to define a Data-Schema Definition Statement.
  • It can be associated to a Database Programming Language.
  • …
• Example(s):
  • a MySQL DDL.
  • a HiveQL DDL.
  • a Transact-SQL DDL.
  • …
• Counter-Example(s):
  • a Data Manipulation Language.
  • a Data Control Language.
• See: [MS SQL Server]].

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References

2009

• (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Data_Definition_Language
  • Data Definition Language or Data Description Language (DDL) is a computer language for defining data structures, especially database schemas. The term was first introduced in relation to the Codasyl database model, where the schema of the database was written in a Data Definition Language describing the records, fields, and "sets" making up the user Data Model. Initially it referred to a subset of SQL, but is now used in a generic sense to refer to any formal language for describing data or information structures, like XML schemas.

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