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Extending Informix®Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix® includes many built-in extensions that are fully integrated in the database server. Informix® 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 Informix®.
Informix® extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Database Extensions User's GuideThe Informix® Database Extensions User's Guide explains how to use the database extensions that come with HCL Informix®: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, and SQL packages.
Basic Text SearchYou can perform basic text searching for words and phrases in a document repository stored in a column of a table.
Basic Text Search XML index parameters
The xmlpath_processing index parameter
Example: Index XML paths

Example: Index XML paths

Use XML path processing to restrict searches by paths.

Given the XML fragment:

<boat>
	<skipper>Captain Black</skipper>
	<boatname>The Queen Anne's Revenge</boatname>
	<alternate>
		<skipper>Captain Blue Beard</skipper>
	</alternate>
</boat>

Following are the possible XML paths and text values:

/boat/skipper:Captain Black
/boat/boathame:The Queen Anne's Revenge
/boat/alterate/skipper:Captain Blue Beard

To create an index for boat/skipper and skipper, use the statement:

CREATE INDEX boats_bts ON boats(xml_data bts_lvarchar_ops) 
using bts(xmltags="(boat/skipper,skipper)",xmlpath_processing=yes) 
IN bts_sbspace;

Each path is compared to the values specified by the xmltags parameter. The index then creates fields for the entire first matching path found for each xmltags value. In this example, the first path matches boat/skipper. The third path matches skipper. The index will contain two fields that can be searched:

/boat/skipper:Captain Black
/boat/alterate/skipper:Captain Blue Beard

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