Types of domains

Some fields are associated with Select Value lists from which you can choose an appropriate value. The lists of defined values are known as domains (sometimes referred to as value lists).

You can work with the following types of domains:
ALN
A list of alphanumeric values.
Crossover
A special table domain in which the system brings back another value (or values) from the specified record.
Numeric
A list of numeric values.
Numeric range
A list of numeric values that you define by specifying a range.
Synonym
These are special, reserved domains in the system. You cannot add or delete synonym domains. You can add new synonym values that are presented to the user.
Table
A list of values generated from a table.

Internal and non-internal domains

Some domains are used by the business logic of the system. These domains are called internal domains.

If you attempt to edit an internal domain, you encounter the following restrictions:
  • You can modify only the description of the internal domain and internal domain values.
  • You cannot add or delete a row of values from an internal domain.
  • You cannot delete an internal domain.


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