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Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc
What is known as heap file organization? In the heap file organization, any record can be placed anywhere in the file where there is space for the record. There is no ordering
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
Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic
growing phase and shrinking phase are disjoint, why ?
how many types of data model in DBMS? explain data abstraction with its different level
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
Unrepeatable reads : Assume T7 reads X twice during its implementation. If it did not update X itself it could be very disturbing to see a dissimilar value of X in its next read. B
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