relational model

常见例句

They are relational databases that provide the strengths of the relational model and its set processing.
这两种都是关系型的数据库，因而包含了关系模型及其集合处理的长处。
A primary key is a special thing in the relational model: It must be unique to each record (row) of a table.
在关系模型中主键是特殊的事物：它对于表的每个记录（行）必须是唯一的。
Semi-structured data refers to data with some form of structure but not enough structure to fit gracefully into a relational model.
半结构化数据是指带有某些形式的结构但是结构还不足以完美地适合关系模型的数据。