Any modification to the recordstructure 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。
2
Essentially, you would have had to implement your own recordstructure within a comment to represent an ID, a Posting user, etc.
实际上,您必须在评论内实现自己的记录结构来表示ID、一个发贴用户,等等。
3
It probably isn't enough to break a table down into rows and columns-the recordstructure of a relational table might not capture some useful groupings.