RWTH Aachen University
At present more and more industrial applications interacts in real time. Some of them are manipulating with large amounts of information. The authors have implemented soft real-time DBMS (DataBase Management System) prototype called ZDBMS. Using this prototype they have investigated performance for commonly used policies EDF (Earliest Deadline First), LSF (Least Slack First) and for new transaction handling policy SPF (Static Priority First) oriented for using in cases when transactions have different static priorities. The results represent these policies performance for equal sets of experiments.