For federated statements, this will be the mechanism that overwrites the document's internal schema specification if the schema information is not accessible by the DB2 server.
对于联邦语句而言，如果模式信息不能由DB 2服务器访问，那么就会改写文档的内部模式规范。
2
Such statements suggest "service" is more concrete, that is, a specification of something, but still not something with which a requester can interact.
这些话表明“服务”比较具体，也就是说，是某种东西的规范，但仍然不是请求者可以与之交互的东西。
3
A limitation of the JDBC 2 specification is that statements that return multiple results must have only one ResultSet open at any given time.