Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Identifiers / key an attribute[…]
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Partial Specialization Rule,”a supertype may have a subtypeIndicated with a single line (e.g.
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Partial Specialization Rule,”a supertype may[…]
Read moreCandidate identifier/keys
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Candidate identifier/keys an attribute or[…]
Read moreDisjointess contraint:
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Disjointess contraint: determines whether a[…]
Read morePrimary identifier vs. alternate identifier,”(e.g., ID vs. first, middle
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Primary identifier vs. alternate identifier,”(e.g.,[…]
Read moresubtype discriminators,”Hourly- HSalaried- SConsultant- CThe letters H, S
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.subtype discriminators,”Hourly- HSalaried- SConsultant- CThe[…]
Read moreCriteria for identifiers,”-won’t change in value-will not be null-Avoid intelligent identifiers (e.g., containing locations or people that might change)-In general, substitute new, simple keys for long
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Criteria for identifiers,”-won’t change in[…]
Read moreT/F? Supertype/subtype relationships can span multiple levels
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.T/F? Supertype/subtype relationships can span[…]
Read moreWhat is a database management system?,”DBMS is a collection of programs that enables users to define, construct
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.What is a database management[…]
Read moreDon’t want name as primary identifier
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Don’t want name as primary[…]
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