EN
The aim of this article is to carry out a comparative analysis of the performance of databases: SQLite, MS SQL Server 2014, Firebird 2.5 Server and Firebird 2.5 Embedded with the use of the object-relational mapping library ServiceStack.Ormlite and IDBCommand interface in Visual Studio with the use of C# programming language within the framework of .Net Framework 4.5 platform. The selected database will serve in the future as a data store for the operation of a genetic algorithm, which role will be processing of stock market data. Test data is daily data of stock quotations of the stock exchange downloaded from bossa.pl on 6.06.2015.