17 Object Types

The Expression Filter feature is supplied with a set of predefined types and public synonyms for these types. Most of these types are used for configuring index parameters with the Expression Filter procedural APIs. The EXF$TABLE_ALIAS type is used to support expressions defined on one or more database tables. Table 17-1 describes the Expression Filter object types.

None of the values and names passed to the types defined in this chapter are case sensitive. To preserve the case, use double quotation marks around the values.


See the "Expression Filter Types" chapter in Oracle Database PL/SQL Packages and Types Reference for all reference information concerning Expression Filter object types.

Table 17-1 Expression Filter Object Types

Object Type Name Description


Specifies the stored and indexed attributes for the Expression Filter indexes


Specifies a list of stored and indexed attributes when configuring index parameters


Specifies a list of common operators in predicates with a stored or an indexed attribute


Indicates a special form of elementary attribute used to manage expressions defined on one or more database tables


Associates preferences to a text attribute in an attribute set or an event structure.


Configures an XML element or an XML attribute for indexing a set of XPath predicates


Specifies a list of XML tags when configuring the Expression Filter index parameters