research for a database mapping platform based on multi-job step 基于多作业步的数据库映射平台的研究
an object to relational database mapping framework, using the new jdk1.5 annotations, that fully manages the database 一个对象到关系数据库映射框架,使用新的jdk1.5注释,其完全管理数据库。
optionally, you can combine the two mappings for a direct dtd-to-database mapping, as is done in most software today 也可以将这两种映射合并成一个dtd到数据库的映射,现在多数软件都是这样做的。
while the ejb implementations conform to the j2ee 1.4 and ejb 2.1 standards, the internal workings of the container can be very different-especially the entity cmp beans, which use the extended deployment descriptors to provide object to database mapping information 虽然ejb实现遵循j2ee1.4与ejb2.1标准,但容器的内部工作方式却大不相同特别是entitycmpbean,它利用扩展部署描述符给对象提供数据库映射信息。
if you use the websphere aat to generate deployment code for an ejb jar file, or deploy an undeployed ejb jar file using the websphere administration console without specifying any additional information about database mapping, it will perform a top-down mapping 如果您使用websphereaat为ejbjar文件生成部署代码,或者不指定关于数据库映射的任何额外信息,使用websphere管理控制台(websphereadministrationconsole)部署一个未部署的ejbjar文件,它将执行自顶向下的映射。