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
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