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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.
R-tree secondary access method concepts

R-tree secondary access method concepts

These topics provide a detailed discussion of the R-tree secondary access method and an in-depth discussion about how R-tree indexes work.

This guide uses the Shapes3 sample DataBlade® module, described in Shapes3 sample DataBlade module, to illustrate how to use the R-tree access method and how to create DataBlade modules that implement the R-tree access method.

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