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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.
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.
Globalization and date formats
Support for code-set conversion
Unicode to database code set

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.
- 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.
  - Getting started
  - Connect to the database
  - Perform database operations
  - Work with Informix® types
  - Work with opaque types
  - Globalization and date formats
    - Support for Java™ and globalization
    - Support for HCL Informix® GLS variables
    - Support for DATE end-user formats
    - Precedence rules for end-user formats
    - Support for code-set conversion
    - User-defined locales
      Informix® JDBC Driver uses the Java™ globalization API to manipulate international data.
    - Support for globalized error messages
  - Push data feature
  - Tuning and troubleshooting
  - Appendixes
- 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.

Unicode to database code set

Java™ is Unicode based, so Informix® JDBC Driver converts data between Unicode and the Informix® database code set. The code-set conversion value is extracted from the DB_LOCALE value specified at the time the connection is made. If the DB_LOCALE value is incorrect, a Database Locale information mismatch error occurs.

The DB_LOCALE value must be a valid Informix® locale, with a valid Informix® code-set name or number as shown in the compatibility table that follows. The following table maps the supported Java™ development kit encodings to Informix® code sets.


Informix® code set name	Informix® code set number	JDK code set
8859-1	819	8859_1
GB18030-2000	5488	GB18030

You cannot use the Informix® locale with a code set for which there is no JDK-supported encoding. This incorrect usage results in an Encoding or code set not supported error message.

The supported locales are en_us and zh_cn.