If the question is a performance, it's difficult question, as each database can be configured to be more (and more) faster for each special case. MySQL with MyISAM engine will be faster. But MySQL has limitations for indexes for multilingual columns (Item names actually). So, with long Item names (larger ofOracle or PostgreSQL also are good for performance. DB2 and MSSQL are slower in default configurations. Default configuration of Sybase leader of slowness. But in this question, take the database server maintenance in account. MySQL and PostgreSQL are simple in installation and can work even on limited hardware. Oracle, DB2, MSSQL or Sybase need more efforts. The same actual for maintenance during the work. Note for Sybase: "check-sns-new-connection" data container configuration parameter should be set to "true". For testing purpose, embedded database such as HSQLDB is the best choice. Apache Derby and H2 also supported. But H2 surprisingly needs "beta" feature enabled - MVCC=TRUE in JDBC url.