Suppose there is an application with10Tables, each table has tens of millions of records, and...

usehashstructure, and a table uses ahashKEY, a row in the table records forhash keyone of indivualed.

usehashTable structure, each row record of each table uses onehashKEY, hashKEYofebCorrespondence table

record fields, and designKEYEach table adds a different prefix to distinguish it.

useringstructure, each field of each row record of each table uses oneKEY.

usem3structure, each row record of each table uses oneKEY,,aueAll records for a row in the table. The value after the field is concatenated.