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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.
Locate simple large objects in filesYou can locate simple-large-object data in the open or named types of files.
File-open mode flags

File-open mode flags

When you use files for simple-large-object data, also set the loc_oflags field of the locator structure. The loc_oflags field is of type integer and it contains the host-system file-open mode flags.

These flags determine how the file is to be accessed once it is opened:

LOC_RONLY is a mask for read-only mode. Use this value when you insert a simple large object into a file.
LOC_WONLY is a mask for write-only mode. Use this value when you select a simple large object into a file and you want each selected simple large object to write over any existing data.
LOC_APPEND is a mask for write mode. Use this value when you select a simple large object into a file and you want to append the value to the end of the file.