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What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Consider a database schema consisting of four relations, whose schemas are: Product (maker, model, type) PC (model, speed, ram, hd, price) Laptop (model, speed, ram, hd, s
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If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
If the deletion violates referential integrity constraint, then three alternatives are available: Default option: - refuse the deletion. It is the job of the DBMS to describ
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