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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
The smart-large-object interfaceThe smart-large-object interface contains a set of functions and data types to provide access to smart large objects.

The smart-large-object interface

The smart-large-object interface contains a set of functions and data types to provide access to smart large objects.

It enables you to access the data of a smart large object in much the same way as you would access an operating-system file on UNIX™, Linux™, or Windows™. The interface provides the following:

Smart-large-object functions
Smart-large-object data type structures

The milo.h header file defines the functions and data type structures of the smart-large-object interface. The mi.h header file automatically includes the milo.h header file. You must include either mi.h or milo.h in any DataBlade® API routine that calls a smart-large-object function or declares one of the smart-large-object data type structures.

Topics in this section describe how to use the smart-large-object interface to perform the following operations on a smart large object.


Smart-large-object operation	More information
Create a new smart large object	Creating a smart large object
Access data in an existing smart large object	Accessing a smart large object
Modify an existing smart large object	Modify a smart large object
Obtain status information about an existing smart large object	Obtaining status information for a smart large object
Delete a smart large object	Delete a smart large object

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