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Insulation between conceptual and physical structures
It can be defined as:
1. The Database Administrator should be capable to vary the storage structures without affecting users' views.
2. The internal structure of the database should be unaffected by the varies to the physical aspects of the storage, like changing to a new storage device.
3. The DBA should be able to vary the conceptual structure of the database without affecting all users.
Explain the disadvantages of creating a temporary table? If you have already created a temporary table with a shown name and attempting to create a second one with that nam
Compare wait-die deadlock prevention scheme with wait-wound scheme Ans: Wait-Die Scheme a) Based upon a nonpreemptive technique. b) If Pi requests a resource present
aggregation
The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p
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Niles Video Inc. wants to create a website for online sales of movies (DVD and videotapes). People will be allowed to register as customers on the website and to update their store
what is union compatable?
Implementation and SQL Applications
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What are shortcomings in structured approach? Structured methodology treats data and their behaviours separately, and this makes it harder to isolate changes. If changes are re
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