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(guān)系型的數(shù)據(jù)庫，因而包含了關(guān)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(guān)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(jié)構(gòu)化數(shù)據(jù)是指帶有某些形式的結(jié)構(gòu)但是結(jié)構(gòu)還不足以完美地適合關(guān)系模型的數(shù)據(jù)。