.. _vector.idb:

IDB
===

.. shortname:: IDB

.. build_dependencies:: Informix DataBlade

This driver implements support for access to spatial tables in IBM
Informix extended with the DataBlade spatial module.

When opening a database, its name should be specified in the form

::

   "IDB:dbname={dbname} server={host} user={login} pass={pass} table={layertable}".

The IDB: prefix is used to mark the name as a IDB connection string.

If the *geometry_columns* table exists, then all listed tables and named
views will be treated as OGR layers. Otherwise all regular user tables
will be treated as layers.

Regular (non-spatial) tables can be accessed, and will return features
with attributes, but not geometry. If the table has a "st_*" field, it
will be treated as a spatial table. The type of the field is inspected
to determine how to read it.

Driver supports automatic FID detection.

Driver capabilities
-------------------

.. supports_create::

.. supports_georeferencing::

.. supports_virtualio::

Environment variables
---------------------

-  ``INFORMIXDIR`` It should be set to Informix client SDK install dir

-  ``INFORMIXSERVER``: Default Informix server name

-  ``DB_LOCALE``: Locale of Informix database

-  ``CLIENT_LOCALE``: Client locale

For more information about Informix variables read documentation of
Informix Client SDK

Configuration options
---------------------

-  .. config:: IDB_OGR_FID
      :default: ogc_fid

      Set name of primary key.

Example
-------

This example shows using ogrinfo to list Informix DataBlade layers on a
different host.

::

   ogrinfo -ro IDB:"server=demo_on user=informix dbname=frames"
