Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Entity intergrity ?
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Types of functional dependency,”Full, partial
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Types of functional dependency,”Full, partial[…]
Read moreHow do you map an associative entity?
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.How do you map an[…]
Read moreFull dependency
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Full dependency : values in[…]
Read moreMapping Unary 1:1 and 1:M Relationships,”A unary 1:1 or 1:M relationship requires using an entity’s primary key as a foreign key within the relational schema. Ex.MECHANIC(MechID, Salary
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Mapping Unary 1:1 and 1:M[…]
Read moreArmstrong’s Axioms
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Armstrong’s Axioms ReflexivityAugmentationTransivityDecompositionUnionPseudotransivity
Read moreMapping Unary M:N Relationships,”Mapping this relationship requires adding an intersection relation:MECHANIC(MechID, Salary)SUPERVISES(SupervisorID, SuperviseeID)In this case
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Mapping Unary M:N Relationships,”Mapping this[…]
Read moreReflexivity,”If Y ⊆ X, then X → YIn other words, an attribute always determines itselfReflexivity relates to trivial functional dependencies: FDs that include themselves (e.g., X → X or X, Y → X). Again
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Reflexivity,”If Y ⊆ X, then[…]
Read moreNatural/ business key
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Read moreMapping Ternary Relationships,”STUDENT(StudentID, StudentName)COURSE(CourseID, CourseName)PROFESSOR(ProfID, ProfName)RELATESTO(StudentID, CourseID
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Mapping Ternary Relationships,”STUDENT(StudentID, StudentName)COURSE(CourseID, CourseName)PROFESSOR(ProfID,[…]
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