Home
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
Connection handlingThis section describes how to initialize, establish, and close connections.
Establish a connectionThe DataBlade® API functions, mi_open() and mi_server_connect() (client only), are constructor functions for a connection descriptor.
Establish a UDR connection (Server)A UDR connection is the way that a C UDR obtains access to the session context; that is, to the database server and database that the calling client application has already established.

Establish a UDR connection (Server)

A UDR connection is the way that a C UDR obtains access to the session context; that is, to the database server and database that the calling client application has already established.

A C UDR can establish one of two kinds of connections to a session:

The public connection descriptor provides the C UDR invocations within an SQL command with access to the session context.
The session-duration connection descriptor provides the C UDR invocations within a session with access to the session context.

Rate this topic

5 stars 4 stars 3 stars 2 stars 1 star

Comment on this topic.

By clicking this box, you acknowledge that you are NOT a U.S. Federal Government employee or agency, nor are you submitting information with respect to or on behalf of one. HCL provides software and services to U.S. Federal Government customers through its partners immixGroup, Inc. Contact this team at https://hcltechsw.com/resources/us-government-contact. Do not include any personal data in this Comment box.