Basic HTML version of Foils prepared 7 October 97

Foil 14 Relational Rules - 3

From Untitled presentation ARL Database Tutorial -- February 98. by Gang Cheng, C.W. Ou, Geoffrey C. Fox
1 Rule 3: The uniqueness rule - two rows in a table cannot be identical in all column values at once
2 Example: the two rows are not allowed to coexist in the phone_list_table
3 pid phone no type
4 3 315-443-9209 office
5 3 315-443-9209 office
in Table To:

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