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object-oriented software development using sun microsystems java language has become an industry standard for building scalable enterprise client/server applications. additionally, most online transaction processing (oltp) applications developed today by enterprises use relational databases as a standard datastore, forcing developers to be proficient in the details and intricacies of both relational database design and object-oriented programming. they also must contend with mapping objects to relational schema, object management and caching, object navigation, transaction and concurrency controls. however, until recently developing java applications with relational databases has been a time consuming process for developers.
to simplify development of application programs that use the java programming language objects and relational databases, sun microsystems is introducing a new software product called java blend. the primary goal of java blend software is to provide programmers with a tool to easily develop business applications entirely in java. with java blend, developers arent required to learn the details of relational databases or structured query language (sql).
java blend consists of a development tool and a run-time environment. the development tool provides bidirectional mapping that can be used to map existing relational schema into a set of java classes or map an application model written in java to a new database schema to store instances of java classes. the run-time environment provides transparent and automati... 下一页