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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®.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in Informix® databases.
R-Tree Index User's GuideThe Informix® R-Tree Index User's Guide describes the HCL Informix® R-tree secondary access method and how to access and use its components.
Manage databases that use the R-tree secondary access method
Performance tips

Performance tips

These topics discuss tips on how to improve the performance of using R-tree indexes. It includes topics on how to maintain accurate statistics and how to improve the performance of queries that use R-tree indexes.

You might also want to refer to Design a user-defined data type, which describes performance considerations when designing the user-defined data type of the column that is indexed with an R-tree index.

For other performance issues that are also relevant to R-tree indexes, refer to the Informix® Performance Guide.

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