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Client APIs and toolsYou can use the HCL OneDB™ implementation of client APIs to develop applications for HCL OneDB™ database servers.
ESQL/C GuideThe HCL OneDB™ ESQL/C Programmer's Manual explains how to use , the HCL OneDB™ implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
What is HCL OneDB™ ESQL/C?
HCL OneDB™ ESQL/C programming
What is HCL OneDB™ ESQL/C? is an SQL application programming interface (API) that enables you to embed Structured Query Language (SQL) statements directly into a C program.
ESQL/C components

ESQL/C components

consists of the following software components:

The libraries of C functions, which provide access to the database server.
The header files, which provide definitions for the data structures, constants, and macros useful to the program.
The esql command, which processes the source code to create a C source file that it passes to the C compiler.
The finderr utility on the UNIX™ system and the Windows™ Informix Error Messages utility, which enable you to obtain information about error messages specific to HCL OneDB™.
The locale and code-set-conversion files, which provide locale-specific information.
For more information about these files, see the HCL OneDB GLS User's Guide.