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Briefly explain what is to be done during defining problem statement.
To define Problem Statement of a system, define what is to be done and how you can go to implement that. Your statement should include mandatory features, as well as the optional features of system to be developed.
You should include:
What is problem and its scope,
What is required?
Application context
Assumptions
Performance needs.
Differentiate between join and outer join? Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get toge
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What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Can you assist me in Database management system? I need help in my courses, please email me at and get back me soon...
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
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Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
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