Query optimization from DL/1 (IMS) to sol

A.V. Anisimov, O.P. Kulyabko, P.P. Kulyabko, O.O. Marchenko

Abstract


The programming language DL/1 (DBMS IMS) has significantly lower level than SQL-language, but many technologies consider that in migration process each DL/1-statement is changed with exactly one SQL-statement. However sometimes one SQL-statement can be put instead of sequence of DLI-statements. Last case may mean the sufficient optimization of the source code in comparison with the previous one.

Problems in programming 2010; 2-3:376-381


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