Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Attributes,”EllipseMay be candidate or primary[…]
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T/F a relationship and also be an entity
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.T/F a relationship and also[…]
Read morerelationships,”DiamondDegree- unary/ recursive, binary
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.relationships,”DiamondDegree- unary/ recursive, binary ternaryCardinality-[…]
Read moreProblem with ternary relationship
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Problem with ternary relationship No[…]
Read moreCardinality possibilities
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Cardinality possibilities Mandatory onemandatory manyoptional[…]
Read moreSolution to ternary problem
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Solution to ternary problem aggregation
Read moreThree types of maximum cardinality
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Read moreSubtypes and supertypes,”specialization/ generalization All attributes of a supertype are inherited by each of its subtypes, including a common identifierSubtypes have their own unique attributes beyond those of the supertypeIndicated using a circle and connecting lines
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Subtypes and supertypes,”specialization/ generalization All[…]
Read morewhat are control files,”Each database has one unique control file that contains data about the database itself (that is, physical database structure information). Multiple copies may be maintained to protect against total loss. It can also contain metadata related to backups. The control file is critical to the database. Without the control file
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.what are control files,”Each database[…]
Read moreWhat Are Information Systems?
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.What Are Information Systems? Integrated/coordinated[…]
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