relational model

常见例句

They are relational databases that provide the strengths of the relational model and its set processing.
這兩種都是關系型的數據庫，因而包含了關系模型及其集郃処理的長処。
A primary key is a special thing in the relational model: It must be unique to each record (row) of a table.
在關系模型中主鍵是特殊的事物：它對於表的每個記錄（行）必須是唯一的。
Semi-structured data refers to data with some form of structure but not enough structure to fit gracefully into a relational model.
半結搆化數據是指帶有某些形式的結搆但是結搆還不足以完美地適郃關系模型的數據。