Data-Schema Definition Language

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



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.