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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.
DataBlade® API Programmer's GuideThe Informix® DataBlade® API Programmer's Guide describes information about the DataBlade® API, the C-language application programming interface (API) provided with HCL Informix®.
Database access
Execute SQL statementsOne basic task of a DataBlade® API module is to send SQL statements to the database server for execution.
Save setsSave sets provide a mechanism for a DataBlade® API module to access several rows simultaneously.
Create a save setYou create a save set with mi_save_set_create(), which returns a pointer to a save-set structure (MI_SAVE_SET).

Create a save set

You create a save set with mi_save_set_create(), which returns a pointer to a save-set structure (MI_SAVE_SET).

The mi_save_set_create() function is a constructor for the save-set structure. You pass this save-set structure to other DataBlade® API save-set functions so they can access the save set. The save set is associated with a specified connection. Therefore, you must pass a connection descriptor into mi_save_set_create().

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