1.mySQL

https://dev.mysql.com/downloads/connector/

2.IBM DB2

http://www-01.ibm.com/support/docview.wss?uid=swg21363866

3.Oracle

http://www.oracle.com/technetwork/database/features/jdbc/jdbc-drivers-12c-download-1958347.html

4.SQL Server

https://www.microsoft.com/en-us/download/details.aspx?id=55539

5.PostgreSQL

https://jdbc.postgresql.org/download.html

6.Microsoft Access

https://www.easysoft.com/products/data_access/jdbc-access-gateway/index.html#section=tab-1