实: solid源: source; fountainhead源数据项: source data entry; source data item虚拟源数据项: virtual source data item源数据: source data数据项: data items; datum; di data item实源: actual source外来源数据: foreign source data源数据结构: source data structure源数据库: source database变址数据项: index data item布尔数据项: boolean data item导出数据项: derived data item发送数据项: sending data item浮点数据项: floating point data item基本数据项: elementary data item接收数据项: receiving data item结构数据项: structure data item; structured data item结果数据项: result data item控制数据项: control data item; controldataitem领域数据项: realm data item逻辑数据项: logical data item模式数据项: schema data item全局数据项: global item全字数据项: full-word data item
