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Timestamps For Read operations: If TS (T) If TS (T) >= W-timestamp (Q), then the transaction T is trying to read a value of data item Q which has been written and committed
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.
explain thee diffrent types of data models
case study
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
WHAT IS SQL
it can be possible to create any table without primary key
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
A file manipulation command that extracts some of the records from a file is called ? A file manipulation command that extracts some of the records from a file is called SELECT
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