Home
Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Spatial Data User's GuideThe HCL OneDB™ Spatial Data User's Guide contains information to assist you in using the HCL® OneDB® spatial extension. The HCL® OneDB® spatial extension adds custom data types and supporting routines to the server.
Appendixes
OGC well-known text representation of spatial reference systemsThese topics explain how to represent a spatial reference system using a text string and provides information about supported units of measure, spheroids, datums, prime meridians, and projections.
Prime meridiansHCL® OneDB® spatial data types support many prime meridians.

Prime meridians

HCL® OneDB® spatial data types support many prime meridians.

The following table lists a representative sample of the prime meridians supported by the HCL OneDB spatial data types. For a complete list of supported prime meridians, see the file ONEDB_HOME/extend/spatial.version/include/pedef.h.

Table 1. Prime meridians
Factory ID	Description	OGC well-known text string
8901	Greenwich 0°00'00"	PRIMEM["Greenwich",0]
8912	Athens 23°42'58".815 E	PRIMEM["Athens",23.7163375]
8907	Bern 7°26'22".5 E	PRIMEM["Bern",7.439583333333333]
8904	Bogota 74°04'51".3 W	PRIMEM["Bogota",-74.08091666666667]
8910	Brussels 4°22'04".71 E	PRIMEM["Brussels",4.367975]
8909	Ferro 17°40'00" W	PRIMEM["Ferro",-17.66666666666667]
8908	Jakarta 106°48'27".79 E	PRIMEM["Jakarta",106.8077194444444]
8902	Lisbon 9°07'54".862 W	PRIMEM["Lisbon",-9.131906111111112]
8905	Madrid 3°41'16".58 W	PRIMEM["Madrid",-3.687938888888889]
8913	Oslo 10°43'22".5 E	PRIMEM["Oslo",10.72291666666667]
8903	Paris 2°20'14".025 E	PRIMEM["Paris",2.337229166666667]
8906	Rome 12°27'08".4 E	PRIMEM["Rome",12.45233333333333]
8911	Stockholm 18°03'29".8 E	PRIMEM["Stockholm",18.05827777777778]

Have feedback?
Google Analytics is used to store comments and ratings. To provide a comment or rating for a topic, click Accept All Cookies or Allow All in Cookie Preferences in the footer of this page.