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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.
Appendixes
Mapping data types
Data type mapping for UDT manager and UDR manager
Mapping for field types

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
  - Push data feature
  - Tuning and troubleshooting
  - Appendixes
    - Sample code files
    - DataSource extensions
    - Mapping data types
    - Convert internal Informix® data types
      For your Java™ application to work with the internal server representation of HCL Informix® data types, use the IfxToJavaType class. For example, if your application is using the Informix Change Data Capture API, you can use the IfxToJavaType class to interpret the byte stream.
    - Error messages
- 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.

Mapping for field types

The following table shows the mapping supported between the types defined for the ifxtype parameter in the UDTMetaData.setFieldType() method and the Java™ data types as they appear in the Java™ class file. Data types not shown in this table are not supported within the opaque type.


ifxtype parameter type from com.informix.lang.IfxTypes	Java™ data type
IFX_TYPE_BIGINT	long
IFX_TYPE_BIGSERIAL	long
IFX_TYPE_CHAR	java.lang.String
IFX_TYPE_SMALLINT	short
IFX_TYPE_INT	int
IFX_TYPE_FLOAT	double
IFX_TYPE_SMFLOAT	float¹
IFX_TYPE_DECIMAL	java.lang.BigDecimal
IFX_TYPE_SERIAL	int
IFX_TYPE_DATE	Date
IFX_TYPE_MONEY	java.lang.BigDecimal
IFX_TYPE_DATETIME	java.lang.Timestamp if starting qualifier is Year, Month, or Day; otherwise, java.lang.Time (see Field lengths and date-time data).
IFX_TYPE_INTERVAL	com.informix.lang.IfxIntervalYM if starting qualifier is Year or Month; otherwise, com.informix.lang.IfxIntervalDF (see Field lengths and date-time data).
IFX_TYPE_NCHAR	java.lang.String
IFX_TYPE_INT8	long
IFX_TYPE_SERIAL8	long
IFX_TYPE_BOOL	boolean
IFX_TYPE_CLOB	java.sql.Clob
IFX_TYPE_BLOB	java.sql.Blob

¹ This mapping is JDBC compliant. You can map IFX_TYPE_SMFLOAT data type (via the JDBC FLOAT data type) to the Java™ double data type for backward compatibility by setting the IFX_GET_SMFLOAT_AS_FLOAT environment variable to 1.