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0.31 Answer the following questions (a) Explain the difference between casual user and parametric users in DBSM. (b) Explain difference between super key of relation

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0.31 Answer the following questions (a) Explain the difference between casual user and parametric users in DBSM. (b) Explain difference between super key of relation R and key of relation R (c) Explain difference between primary key and secondary key (d) Explain the entity integrity constraint (e) Explain the referential integrity constraint (0) In the context of ER diagram, explain total/partial constraint, and cardinality constraint

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