repeating group

repeating group

(database)
Any attribute that can have multiple values associated with a single instance of some entity. For example, a book might have multiple authors.

Such a "-to-many" relationship might be represented in an unnormalised relational database as multiple author columns in the book table or a single author(s) column containing a string which was a list of authors. Converting this to "first normal form" is the first step in database normalisation. Each author of the book would appear in a separate row along with the book's primary key. Later nomalisation stages would move the book-author relationship into a separate table to avoid repeating other book attibutes (e.g. title, publisher) for each author.
References in periodicals archive ?
Enhanced Repeating Group Support: Easily test complex message types containing repeating groups.
Developers are looking to ColdFusion MX 7 to easily design and generate high-quality, repeating group, structured business reports and populate them dynamically in the context of web applications, as well as create rich Macromedia Flash(R) forms.
Third normal form" (3NF) data storage is the technical term for data storage that meets three requirements: (1) there are no repeating groups, (2) there aren't any non-key fields that depend on only part of the primary key, and (3) there aren't any dependencies on non-key fields.
Filling a border with repeating groups of these plants maximizes their impact while providing continuity.
Since it naturally supports hierarchies and repeating groups, legacy data structures can be fully represented without compromise, redundancy or restructuring.