Type 1: JDBC-ODBC
Drawback: client code must be loaded and configured on each client machine.
Type 2: A Native-API partly-Java driver
JDBC call -> client API
drawback: require native code on the client
sample: Oracle OCI through SQL*net
Type 3: A Net-Protocol All-Java driver
JDBC call -> DBMS-independent net protocol -> DBMS protocol(by middleware server)
Type 4: A Native-Protoco All-Java driver
JDBC call -> DBMS server
Sample: Oracle JDBC THIN driver
本文介绍了JDBC的不同类型及其特点:Type1使用JDBC-ODBC桥接,但客户端需要加载配置;Type2为本地API部分Java驱动,如Oracle通过SQL*net的OCI;Type3通过中间件服务器实现网络协议独立;Type4全Java的本地协议驱动,如Oracle JDBC THIN。
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