Vizualizacie plánu vykonávaní dotazů

Abstract

This thesis deals with the possibilities of visualization query execution plans in database systems. The first part focuses on the general issue of optimizing database applications, highlighting the importance of using the query execution plans in the search for problematic SQL queries. The second part describes in detail the query execution plans in various database systems, and presents options of these database systems in terms of query execution plans. In conclusion are described and compared visualized query execution plans in current database systems.