Contents
Why do we need a hierarchy of metadata?
Metadata Levels:A hierarchy of information is proposed to accommodate the diversity of digital objects and to propagate data with some efficiency. Metadata elements may be supplied at multiple and various levels.
When do you use hierarchies in a dimension?
When using extremely complex SQL queries, a few levels in a dimension can impact query performance. Each dimension contains one or more hierarchies. All hierarchies must have a common leaf level. For example, a time dimension might contain a fiscal hierarchy and a calendar hierarchy, with a common leaf level of Day.
How are levels related to parent-child hierarchies?
Closely associated with levels is the concept of distance in parent-child hierarchies. The distance of one member from another is the number of parent-child hierarchical levels from the member to an ancestor or to a descendant. For example, the distance from a member to its parent is always 1.
How many descriptive elements are in a metadata table?
Consquently, five descriptive elements are included in the Table of Core Metadata Elements. Metadata Levels: A hierarchy of information is proposed to accommodate the diversity of digital objects and to propagate data with some efficiency. Metadata elements may be supplied at multiple and various levels.
What’s the difference between a group and managed metadata?
With respect to managed metadata, a group is a set of term sets that all share common security requirements. Only users who have contributor permissions for a specific group can manage term sets that belong to the group or create new term sets within it.
When to use local term set in managed metadata?
If you create a new term set specifically for a Managed Metadata column, that term set will be a local term set that is available only for use within the site collection where it was created.