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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.

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.

The preprocessor, esql, converts each SQL statement and all code specific to HCL® OneDB® to C-language source code and starts the C compiler to compile it.