________ allow users to place information in multiple, overlapping associations rather than in rigid categories.

A) Mashups
B) Tags
C) Web services
D) Wikis

Rigid Categories

Strictly defined classifications that do not allow for flexibility or overlap between different groups or types.

Overlapping Associations

The occurrence in a database or data model where multiple relationships or linkages exist between the same entities.

Tags

Labels or keywords assigned to pieces of information, such as digital documents, photographs, or webpages, which help in organizing and finding information effectively.