Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Data Independence capacity to change[…]
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Mappings,”process of transforming requests & results between levelsmay be time consuming, so some do not support external views
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. Mappings,”process of transforming requests[…]
Read moreExternal/View LevelExternal Schema/User Views
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.External/View LevelExternal Schema/User Views describes[…]
Read moreConceptual Level/Schema,”describes the structure of the whole database for a group of usersschema hides the details of storage & concentrates on describing entities, data types, relationships, user operations
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Conceptual Level/Schema,”describes the structure of[…]
Read moreInternal Level/Schema
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Internal Level/Schema describes the physical[…]
Read moreThree-schema Architecture,”proposed to help achieve/visualize 3 characteristics of a database: use of a catalog to store the description, insulation of programs & data
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Three-schema Architecture,”proposed to help achieve/visualize[…]
Read moreSchema Evolution
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Schema Evolution changing the database[…]
Read moreValid State
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Valid State state that satisfies[…]
Read moreInitial State of Database
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Initial State of Database state[…]
Read moreDefining A Database
Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Defining A Database specify its[…]
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