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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®.
DataBlade® API overview
Access SQL data typesThis section provides an overview of the data types that the DataBlade® API supports.
Character data types
Character data in a smart large objectYou can use a smart large object to store very large amounts of character data. The MI_LO_HANDLE data type has a structure, called an LO handle, that identifies the location of smart-large-object data in a separate database partition, called an sbspace.

Character data in a smart large object

You can use a smart large object to store very large amounts of character data. The MI_LO_HANDLE data type has a structure, called an LO handle, that identifies the location of smart-large-object data in a separate database partition, called an sbspace.

For smart-large-object data that is character data, use the SQL CLOB data type. The CLOB data type allows you to store varying-length character data that is potentially larger than 32 KB. The CLOB data type is a predefined opaque type (an opaque data type that HCL Informix® defines).

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