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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: TutorialThe HCL OneDB™ Guide to SQL: Tutorial shows how to use basic and advanced structured query language (SQL) to access and manipulate the data in your databases. It discusses the data manipulation language (DML) statements as well as triggers and stored procedure language (SPL) routines, which DML statements often use.
Programming for a multiuser environment
Lock with the SELECT statementThe type and duration of locks that the database server places depend on the isolation set in the application and whether the SELECT statement is within an update cursor.
Set the isolation level

Set the isolation level

The isolation level is the degree to which your program is isolated from the concurrent actions of other programs. The database server offers a choice of isolation levels that reflect a different set of rules for how a program uses locks when it reads data.

To set the isolation level, use either the SET ISOLATION or SET TRANSACTION statement. The SET TRANSACTION statement also lets you set access modes. For more information about access modes, see Control data modification with access modes.