What is HCL OneDB ESQL/C?

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 HCL OneDB ESQL/C 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.