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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?
Smart large objectsA smart large object is a data type that stores large, non-relational data objects such as images, sound clips, documents, graphics, maps and other large objects, and allows you to perform read, write, and seek operations on those objects.
Data structures for smart large objects
The LO-specification structureBefore you create a new smart large object, you must allocate an LO-specification structure with the ifx_lo_def_create_spec() function.
Obtain storage characteristics

Obtain storage characteristics

After you have allocated an LO-specification structure with the ifx_lo_def_create_spec() function, you must ensure that this structure contains the appropriate storage characteristics when you create a smart large object.

HCL OneDB™ uses an inheritance hierarchy to obtain storage characteristics. The following figure shows the inheritance hierarchy for smart-large-object storage characteristics.

begin figure description - This figure is described in the surrounding text. - end figure description — Figure 1: Inheritance hierarchy for storage characteristics