Data Dictionaries
A data dictionary is a list of names used by the system
? Brief definition (e.g., what is "date")
? What is it (e.g., number, relation)
? Where is it used (e.g., source, used by, etc.)
? May be combined with a glossary
As the system is implemented, the data dictionary in the requirements is input to the system data dictionary, which is a formal part of the system specification.