! Exercise 2.5.3: Suppose R and S are two relations. Let C be the referen-tial integrity constraint that says: whenever R has a tuple with some valuesVr , V2, . . . , Un in particular attributes A1, A2,... , An, there must be a tuple of Sthat has the same values v1, v2,. .. , Vn in particular attributes B1, B2,... , Bn.Show how to express constraint C in relational algebra.

Referential integrity constraint specifies that the tuple in one relational table that is referring…

Exercise 2.5.3: Suppose R and S are two relations. Let C be the referen- tial integrity constraint that says: whenever R has a tuple with some values V1, V2, ... , Vn in particular attributes A1, A2, ... , An, there must be a tuple of S that has the same values v1, v2, ... , Vn in particular attributes B1, B2,... , Bn. Show how to express constraint C in relational algebra.

Exercise 2.5.3: Suppose R and S are two relations. Let C be the referen- tial integrity constraint that says: whenever R has a tuple with some values V1, V2, ... , Vn in particular attributes A1, A2, ... , An, there must be a tuple of S that has the same values v1, v2, ... , Vn in particular attributes B1, B2,... , Bn. Show how to express constraint C in relational algebra.

Computer Networking: A Top-Down Approach (7th Edition)

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Author:James Kurose, Keith Ross

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Chapter1: Computer Networks And The Internet

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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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! Exercise 2.5.3: Suppose R and S are two relations. Let C be the referen-
tial integrity constraint that says: whenever R has a tuple with some values
Vr , V2, . . . , Un in particular attributes A1, A2,... , An, there must be a tuple of S
that has the same values v1, v2,. .. , Vn in particular attributes B1, B2,... , Bn.
Show how to express constraint C in relational algebra.

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