JDBC drivers are client-side adapters (installed on the client machine, not on the server) that convert requests from Java programs to a protocol that the DBMS can understand.
Types
There are commercial and free drivers available for most relational database servers. These drivers fall into one of the following types:
Types
There are commercial and free drivers available for most relational database servers. These drivers fall into one of the following types:
Type 1 that calls native code of the locally available ODBC driver.
Type 2 that calls database vendor native library on a client side. This code then talks to database over network.
Type 3, the pure-java driver that talks with the server-side middleware that then talks to database
Type 4, the pure-java driver that uses database native protocol.
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