Any modification to the record structure requires modifications to the applications that access these records.
修改了记录结构就需要修改访问这些记录的应用程序。
It probably isn't enough to break a table down into rows and columns-the record structure of a relational table might not capture some useful groupings.
将一个表分解为一些行和列也许还不够—一个关系表的记录结构也许不能捕获一些有用的组合。
It probably isn't enough to break a table down into rows and columns-the record structure of a relational table might not capture some useful groupings.
将一个表分解为一些行和列也许还不够—一个关系表的记录结构也许不能捕获一些有用的组合。
应用推荐