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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.
Database server communication
Working with the database serverThese topics explain how the HCL® OneDB® ESQL/C program can interact with a database server.
The timeout programThe timeout program demonstrates how to set up a timeout interval.

The timeout program

The timeout program demonstrates how to set up a timeout interval.

This program uses the sqlbreakcallback() function to perform the following actions:

To specify a timeout interval of 200 milliseconds for execution of an SQL request
To register the on_timeout() callback function to be called when an SQL request begins and ends as well as when the timeout interval elapses

If execution of an SQL request exceeds the timeout interval, the callback function uses the sqldone() function to ensure that the database server is still busy, prompts the user for confirmation of the interrupt, and then uses the sqlbreak() function to send an interrupt request to the database server.