relational model

常見例句

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(shù)據(jù)庫，因而包含了關系模型及其集合處理的長處。
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：它對于表的每個記錄（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.
半結構化數(shù)據(jù)是指帶有某些形式的結構但是結構還不足以完美地適合關系模型的數(shù)據(jù)。