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Client APIs and tools
You can use the HCL Informix® implementation of client APIs to develop applications for Informix database servers.
ESQL/C Guide
The Informix® ESQL/C Programmer's Manual explains how to use Informix ESQL/C, the Informix implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
Database server communication
Informix® libraries
These topics describe how to link the static, shared, and thread-safe HCL Informix® general libraries with your Informix ESQL/C application.
Compatibility of preexisting ESQL/C applications with current library versions
The ifx_getversion utility (UNIX™)
To obtain the complete version name of the HCL Informix® library, use the ifx_getversion utility.

Client APIs and tools
You can use the HCL Informix® implementation of client APIs to develop applications for Informix database servers.
- Change Data Capture API Programmer's Guide
  The Informix® Change Data Capture API Programmer's Guide describes how to program applications to process changed data from HCL Informix databases using the Informix Change Data Capture API.
- Embedded SQLJ for HCL Informix®
  The Informix® Embedded SQLJ User's Guide contains information about using Informix Embedded SQLJ.
- ESQL/C Guide
  The Informix® ESQL/C Programmer's Manual explains how to use Informix ESQL/C, the Informix implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
  - What is Informix® ESQL/C?
  - Database server communication
    - Exception handling
    - Working with the database server
      These topics explain how the Informix® ESQL/C program can interact with a database server.
    - Informix® libraries
      These topics describe how to link the static, shared, and thread-safe HCL Informix® general libraries with your Informix ESQL/C application.
      - Choose a version of the Informix® general libraries
      - Compatibility of preexisting ESQL/C applications with current library versions
        The ifx_getversion utility (UNIX™)
        To obtain the complete version name of the HCL Informix® library, use the ifx_getversion utility.
        Check the API version of a library
      - Create thread-safe ESQL/C applications
      - ESQL/C thread-safe decimal functions
      - Context threaded optimization
      - A sample thread-safe program
      - Create a dynamic thread library on UNIX™ operating systems
  - Dynamic SQL
  - Appendixes
    This section contains additional reference information.
- GLS User's Guide
  The Informix® GLS User's Guide describes the Global Language Support (GLS) feature available in Informix products.
- API
  The Informix® GLS API Programmer's Guide describes the global language support (GLS) application programming interface (API) available in Informix ESQL/C and HCL Informix DataBlade® modules.
- Informix® Object Interface for C++ Guide
  The Informix® Object Interface for C++ Programmer's Guide describes how to develop HCL Informix client applications by using the object-oriented C++ programming language.
- Informix® ODBC Driver Guide
  The Informix® ODBC Driver Programmer's Manual serves as a user guide and reference for Informix ODBC Driver, which is the Informix implementation of the Microsoft™ Open Database Connectivity (ODBC) interface, Version 3.0.
- .NET provider options
  The Data Server Provider for .NET DB2® provider option is the preferred Informix® provider for developing new applications.
- Informix® JDBC Driver Guide
  The Informix® JDBC Driver Programmer's Guide describes how to install, load, and use Informix JDBC Driver to connect to the Informix database from within a Java™ application or applet.
- Informix International Language Supplement (ILS) User Guide
  These topics include information about the translated user interface files for Informix® UNIX™ products, locales, and code set conversion tables
- Informix® OLE DB Provider Guide
  The Informix® OLE DB Provider Programmer's Guide describes the software requirements for using Informix OLE DB Provider, show how to install and configure the provider for your use, and explain how to use Informix OLE DB Provider to enable client applications, such as ActiveX Data Object (ADO) applications and web pages, to access data on the Informix server.

The ifx_getversion utility (UNIX™)

To obtain the complete version name of the HCL Informix® library, use the ifx_getversion utility.

Before you run ifx_getversion, set the INFORMIXDIR environment variable to the directory in which your HCL Informix® product is installed.

The ifx_getversion utility has the following syntax.

ifx_getversion

libgen.xx libthgen.x libos.xx libthos.x libsql.xx libthsql.x libgls.xx libasf.xx


Element	Purpose	Key considerations
`xx`	For static libraries, `xx` specifies the .a file extension; for shared libraries, `xx` specifies the platform-specific file extension.	For shared libraries, the Sun platform uses the .so file extension and the Hewlett-Packard (HP) platform uses the .sl file extension.

The following example shows an example of output that the ifx_getversion utility generates for the libgen Informix® library:

IBM/Informix-Client SDK Version 3.00.UN191
IBM/Informix LIBGEN LIBRARY Version 3.00.UN191
Copyright (C) 1991-2007 IBM

Output of ifx_getversion depends on the version of Informix® ESQL/C software that is installed on your system.

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