![[DDL logo]](https://www.iucr.org/__data/assets/image/0016/129202/CIF_v2.5_DDL.jpg)
Dictionary definition language DDL2
The relational dictionary definition language (DDL2) is a formalism employed for the recording of CIF data names and their definitions and properties within the mmCIF and related dictionaries.
See also the related DDLm dictionary definition language.
Current release
- Version 2.1.6 of 15 April 2005
- Search for a data name
Archival versions
-
Version 2.1.3 of 16 October 2000
- HTML version
- Formatted pdf version [Chapter 4.10 of International Tables for Crystallography Volume G: Definition and exchange of crystallographic data, First edition (2005)]
Updated 21 July 2005