JDBC 1,2,3,4의 타입별 드라이버의 동작 방식과 설명이다. 개인적으로는 가능한 JDBC4 타입으로 사용하는 것을 선호한다.
| Type | Tier | Driver mechanism | Description |
| 1 | Two | JDBC-ODBC | This driver converts JDBC calls to ODBC calls through JDBC-ODBC Bridge driver which in turn converts to database calls. Client requires ODBC libraries. |
| 2 | Two | Native API – Partly – Java driver |
This driver converts JDBC calls to database specific native calls. Client requires database specific libraries. |
| 3 | Three | JDBC – Net -All Java driver |
This driver passes calls to proxy server through network protocol which in turn converts to database calls and passes through database specific protocol. Client doesn’t require any driver. |
| 4 | Two | Native protocol – All – Java driver |
This driver directly calls database. Client doesn’t require any driver. |
* Reference
– http://www.precisejava.com/javaperf/j2ee/JDBC.htm#JDBC102