users upload words through the web page, limiting the total number of words uploaded by each user and the space occupied by all words. If the words are not duplicated, how to design a database to save each word uploaded by a user? to ensure that the total number of words or the space occupied by all words reaches the upper limit will fail to upload
you can create two tables: a customer table Customer , a vocabulary list Word
first of all, Customer Table:
(Id) () ()
CustomerId Name Num
1 2
2 5
3 8
then Word Table:
(Id) (Id) ()
WordId CustomerId Size
1 3 5
2 1 9
3 2 10
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