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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®.
Data manipulation
Smart large objects
Smart large objects
Information about a smart large objectThe database server keeps storage characteristics and status information about a smart large object: The database server stores this information in a metadata area of the sbspace for the smart large object.
Storage characteristicsThe storage characteristics tell the database server how to manage a smart large object in an sbspace.
Attribute information

Attribute information

Attribute information tells the database server what options, or attributes, to assign to the smart large object:

Logging indicators, which tell the database server whether to log changes to the smart large object in the system log file.
Last-access-time indicators, which tell the database server whether to save the last-access time for a smart large object.
Data-integrity indicators, which tell the database server how to format the pages in the sbspace of the smart large object.

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