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Explain data independence ?
Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level. The three-schema architecture permits the feature of data independence. Data independence occurs since while the schema is changed at a few level, the schema at the further level remains unchanged; only the mapping among the two levels is changed.
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
what characterizes the levels in RAID technology
A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired
What is the difference between SQL Server 2000 complete and differential backups? A complete backup makes a copy of the whole database. A differential backup creates a copy of
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Explain the cartesian product in Database Management System
Explain the main advantages of DBMS over File Oriented System ?
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as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
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