Home
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
The user-defined storage characteristics

The user-defined storage characteristics

The application program can define a unique set of storage characteristics for a new smart large object, as follows:

For smart large objects that are to be stored in a column, you can override some storage characteristics for the column when it creates an instance of a smart large object.
If the application does not override some or all of these characteristics, the smart large object uses the column-level storage characteristics.
You can specify a wider set of characteristics for each smart large object since the smart large object is not constrained by table column properties.
If the application programmer does not override some or all of these characteristics, the smart large object inherits the system-specified storage characteristics.

To specify user-defined storage characteristics, use the appropriate accessor functions for the LO-specification structure. For more information about these accessor functions, see The LO-specification structure.

Rate this topic

5 stars 4 stars 3 stars 2 stars 1 star

Comment on this topic.

By clicking this box, you acknowledge that you are NOT a U.S. Federal Government employee or agency, nor are you submitting information with respect to or on behalf of one. HCL provides software and services to U.S. Federal Government customers through its partners immixGroup, Inc. Contact this team at https://hcltechsw.com/resources/us-government-contact. Do not include any personal data in this Comment box.