TRANSACTION PREPROCESSING METHOD FOR REAL TIME DBMS

摘要

PURPOSE: A transaction pre processing method for a real time DBMS is provided to make a pre processor of an embedded data manipulation language effectively support a pre process in relation to a transaction while compiling an application program, using a real time DBMS of a switching system, in a general purposed computer system. CONSTITUTION: A transaction preprocessing method for a real time DBMS comprises steps of declaring global variables in a declaration within a program, and initializing the variables(101), reading one statement of the DML(102), analyzing the read statement(103), replacing codes for beginning the transaction if the read statement is a begin_trn() and inserting codes for substituting a transaction number for the declared global variables(104,105), replacing conditional statement codes for analyzing a value of the global variable if the read statement is an end_trn() and inserting transaction end codes or error generation codes according to a result of the conditional statement(108,109,110), preprocessing the transaction if the read statement is an undo_trn()(111,112,113,114,115), preprocessing the transaction if the read statement is a data select, update, delete, insert, or algebra function(116,117,118), and preprocessing the transaction if the statement is a data manipulation start or end(119,120,121).