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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?
Simple large objectsA simple large object is a large object that is stored in a blobspace on disk and is not recoverable.
User-defined simple-large-object locationsYou can create your own versions of the loc_open(), loc_read(), loc_write(), and loc_close() functions to define your own location for simple-large-object data.
User-defined simple-large-object functions provides four transfer functions that you can redefine to handle a user-defined simple-large-object location.

User-defined simple-large-object functions

provides four transfer functions that you can redefine to handle a user-defined simple-large-object location.

The loc_open, loc_read, loc_write, and loc_close fields contain pointers to these user-defined location functions. Each of the functions receives the address of the ifx_loc_t structure as its first (or only) parameter. You can use the loc_user_env field to hold data that a user-defined location function needs. In addition, the loc_xfercount and all the fields of the lc_union substructure are available for these functions.