2.4 Scope Index File Format

A scope index file stores a set of scope index records. Each scope index record is associated with a unique scope index key and stores document identifiers for all items that belong to a specific set pointed to by the scope index key.

The set can include, for example, all items on a particular site, all items authored by a particular person, or all items that have a given extension, and can be used to limit the items returned by a search query.

Figure 3: Basic structure of a scope index file

A basic scope index is a scope index file that MUST contain zero or more records with basic scope index keys or an anchor scope index key and one record with a max key.

A compound scope index is a scope index file that MUST contain zero or more records with compound scope index keys and one record with a max key.

Scope index records MUST be ordered by scope index key in default index key sorted order.