periodic group

database (PE) Groups of logically related fields which occur

multiple times within a group.

Periodic groups are a non-relational technique. An example

of a PE would be for storing the history of a person's name

changes, where name was kept in logically related fields such

as surname, first name and middle name - with the person

having changed their name more than once.

[Clarification?]

(1995-10-30)