In the years I've been in and around the CMDB, I've been asked a number of times what the purpose of a Data Dictionary is. In the hopes of answering that, I attach a short document I've written outlining:

• What a CMDB Data Dictionary is,
• Why you probably need one and how you can benefit from having one,
• How you might go about putting one together.

Please have a read, and if you have feedback I would love to hear it.