View PDF

B
B Oracle Locator
Oracle Locator (also referred to as Locator) is a feature of Oracle Database 11g
Standard Edition. Locator provides core features and services available in Oracle
Spatial. It provides significant capabilities typically required to support Internet and
wireless service-based applications and partner-based GIS solutions. Locator is not
designed to be a solution for geographic information system (GIS) applications
requiring complex spatial data management. If you need capabilities such as linear
referencing, spatial functions, or coordinate system transformations, use Oracle Spatial
instead of Locator.
Like Spatial, Locator is not designed to be an end-user application, but is a set of
spatial capabilities for application developers.
Locator is available with both the Standard and Enterprise Editions of Oracle Database
11g. Spatial is a priced option available only with Oracle Database 11g Enterprise
Edition. Spatial includes all Locator features as well as other features that are not
available with Locator.
The installation of Locator depends on the successful and proper installation of Oracle
Multimedia. Oracle Multimedia is installed and configured with Oracle Database 11g,
although you can install Oracle Multimedia manually if necessary, as documented in
Oracle Multimedia User's Guide. During the installation of Oracle Multimedia, Locator
is installed.
In general, Locator includes the data types, operators, and indexing capabilities of
Oracle Spatial, along with a limited set of the functions and procedures of Spatial. The
Locator features include the following:
■ An object type (SDO_GEOMETRY) that describes and supports any type of
geometry
■ A spatial indexing capability that lets you create spatial indexes on geometry data
■ Spatial operators (described in Chapter 19) that use the spatial index for
performing spatial queries
■ Some geometry functions and the SDO_AGGR_MBR spatial aggregate function
■ Coordinate system support for explicit geometry and layer transformations (SDO_
CS.TRANSFORM function and SDO_CS.TRANSFORM_LAYER procedure,
described in Chapter 21)
■ Tuning functions and procedures (SDO_TUNE package, described in Chapter 31)
■ Spatial utility functions (SDO_UTIL package, described in Chapter 32)
■ Integration with Oracle Application Server 10g
Oracle Locator B-1