Attribute Range Index Configuration Help

An Attribute Range Index accelerates queries for comparisons against attributes of the specified element within a specified type.

Each Attribute Range Index keeps track of the values appearing in all attributes with a given element name, attribute name, type, and collation.

Attribute Range Indexes also allow you to use the cts:element-attribute-values family of lexicon APIs and to use the cts:element-attribute-range-query constructor in searches.

Configure the following for each Attribute Range Index:

• The scalar type specifies the ordered domain for the index. Each of the types correspond with an XQuery type.
• The parent namespace uri specifies the namespace URI of the parent element.
• The parent localname specifies the local name of the parent element.
• namespace uri specifies the namespace for an element or an attribute.
• localname specifies the localname for an element or an attribute.
• The collation specifies the collation to use in the comparison operations.
• range value positions specifies whether index data should be included that speeds up the performance of proximity queries involving range queries. Turn this index off if you are not interested in proximity queries and if you want to conserve disk space and decrease loading time.
• invalid values specifies whether server should allow insertion of documents that contain elements on which range index is configured and their contents cannot be coerced to the index data type. It can be configured to either ignore or reject. By default server rejects insertion of such documents. However, if a user configures invalid values to ignore, these documents can be inserted. In that case, the contents of invalid elements will not be indexed. So range queries and lexicon functions that mainly operate off of range index, will ignore existence of such documents in the database.

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Buttons and Tabs:

• Use the Configure tab to edit existing range element attribute index configurations. Click the delete button corresponding to a range index to remove it.
• Use the Add tab to add new range element attribute indexes to the database configuration.