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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
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
Consistency error : These errors happen due to the inconsistent state of database caused may be due to wrong implementation of commands or in case of a transaction abort. To overc
what is the need of a log in dbms
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
Differance between internal and external schema? Internal and external schema: Internal Schema • Describes the physical storage structure • Uses a physical data model External
what is meant semantic query optimization? how does it differ from other query optimization techniques?
discuss the purpose of the concurrency control?
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
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