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  3. customer product cid c00 ones c002 smith c003 green c004...

Question: customer product cid c00 ones c002 smith c003 green c004...

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Customer Product cid c00 ones c002 Smith c003 Green c004 Williams cname county pid pname county stock price 114 0.50 2030 0.50 1.00 1253 1.00 2214 1.00 Essex p01 paint p02 wood Sussex Kent 03 Surrey 1506 Kent p05 screws Essex Order ordno month cid pid quant 100 100 0 P 1012ian c001 019 feb c001 1023 mar c001 1013 1026 may c002P 1015 jan 1014 1021 feb c004 an c002 3 100 anc003 c003 120 120 100 jan
2. One of the integrity rules of relational models is called referential integrity. (a) Explain what it refers to. (b) Using the given company database, discuss why it is desirable to enforce the referential integrity
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