Dictionary definition language DDL1
Note: DDL1 was formally deprecated in August 2014. No new dictionaries will be created by the IUCr using this language and its use is not recommended. All legacy dictionaries are being converted to DDLm.
A dictionary definition language (DDL) is a formalism employed for the recording of CIF data names and their definitions and properties within CIF dictionaries.
See also the relational DDL2 and DDLm dictionary definition languages.
Current release
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Version 1.4.1 of 29 June 2005
- HTML version
- Formatted pdf version [Chapter 4.9 of International Tables for Crystallography Volume G: Definition and exchange of crystallographic data, First edition (2005)]
- Search for a data name
Archival versions
- Version 1.4 of 16 May 1995
Updated 21 July 2005