This is where the interface comes into picture which maintains all the procedure declarations and data types that client and server agreed upon.
这就是接口起的作用，接口维护客户机和服务器都认可的所有过程声明和数据类型。
They follow the DB2 procedure model and provide a homogeneous interface that maps many special features in the data sources to DB2.
它们遵循db2过程模型并提供一个同质的接口，可以将数据源中的许多特殊特性映射到DB2。
Subsequently it discusses detailedly the data interface transformation and the technology that VRML visits database during the realization procedure.
随后，详细讨论了系统实现过程中数据接口转换技术和VRML访问数据库技术。
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