In the 1970s, the rigorous mathematical work of E. F. Codd and others created the now-ubiquitous relational database model.
年代,E . F . Codd与其他一些人通过严格的数学工作创造了现在无处不在的关系数据库模型。
In the 1970s, the rigorous mathematical work of E. F. Codd and others created the now-ubiquitous relational database model.
年代,E . F . Codd与其他一些人通过严格的数学工作创造了现在无处不在的关系数据库模型。
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