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® Developers KitThe DataBlade® Developers Kit (DBDK) guides contain information about the tools you can use to develop and package DataBlade® modules, which extend the functionality of HCL Informix® databases.
DataBlade® Module Development OverviewThe HCL Informix® DataBlade® module overview serves as an overview of the HCL Informix® DataBlade® module development process.
DataBlade® module concepts
DataBlade® modules and the database serverThis section describes the overall architecture of the HCL Informix® database server, how DataBlade® modules affect database server processes, and the application programming interfaces you can use in your DataBlade® modules and client applications.
Internal architecture of the database serverIf you want to add user-defined routines to your HCL Informix® database server, you must understand the internal architecture of the database server and how DataBlade® module routines can affect the database system.
Java™ virtual machineHCL Informix® executes UDRs written in Java™ in its specialized virtual processors, called a Java virtual processor (JVP). A JVP embeds a Java™ virtual machine (JVM) in its code.

Java virtual machine

HCL Informix® executes UDRs written in Java™ in its specialized virtual processors, called a Java virtual processor (JVP). A JVP embeds a Java virtual machine (JVM) in its code.

The JVPs are responsible for executing all UDRs written in Java. Although the JVPs are used for Java-related computation, they have the same capabilities as a user-defined VP, and they can process all types of SQL queries. This embedded VM architecture avoids the cost of shipping Java-related queries back and forth between CPU VPs and JVPs.

For more information about how the database server handles Java code, see the J/Foundation Developer's Guide.

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.