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 basic DDL1 dictionary definition language.

Current official release

• DDL2 dictionary (IUCr site)
• HTML version

Version (2.1.3 of 16 October 2000) available on this disk

• ASCII file for software applications [ Unix DOS/Windows MacOS ]
• HTML version indexed by data items and categories
• PDF file of the printed chapter (4.10)

Version 2.1.3 is that described in Chapter 2.6 and presented in Chapter 4.10. At the time of publication of International Tables for Crystallography Volume G (mid 2005) an updated version 2.1.6 is available from the RCSB web site. For convenience, the ASCII file of version 2.1.6 is also included on this disk.

• Version 2.1.6 (Unix ASCII)