Investigation of the method evaluating time execution of requests in the initial designing of the data storage

The paper deals with computing the performance of an information system. As a special case of the information system, the calculation of the execution time of queries in the data warehouse is performed using oriented graphs. The possibility of applying a graph model for estimating the execution time of a query is considered. A distinction between the estimation of the execution time of the program and the evaluation of the execution of the query in the data warehouse is made. An algorithm for estimating the execution time of the query is investigated by the exclusion graph method.