Domains are a means by which certain characteristics and behaviours of a field may be defined for the application.

For example, a field with a domain (seen in IMCD) of DATE will impart that the field is stored in the data base as an Oracle Data Type of DATE, but that it will also have screen characteristics of a date selector and will be formatted using the date formatting built in to the application

In addition to a domain for each different lexicon, the following are Application Domains:
ABBREVIATION
ADDRESS
AM Tnn
CODE
CODE NUMERIC
DATE
DESCRIPTION
DISTRIBUTION
EDIT MASK
EFFECTIVE
EMAIL
ENCRYPTED
EXPIRY
GOVERNMENT CODE
ID
IDIF
LEXICON
LICENSE
MINUTES
NUMBE Rn
PERCENT
POSTAL CODE
TELEPHONE
TIMESTAMP
TOGGLE
URL
USER DEFINED COLUMN (UDC)
USER_FORMULA_COLUMN
VARCHA Rnn