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Define average seek time.
The average seek time is the average of the seek times, calculated over a sequence of random requests.
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
what is object-identity
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
What is Oracle Process? Explain any four processes started by Oracle. Oracle Process is as follows: SMON: The System Monitor carries out a crash recovery while a crashed in
What are aggregate functions? And list the aggregate functions supported by SQL? Aggregate functions are functions that take a collection of values as input and return a one va
Benefits of heap files 1. This is a easy file Organisation method. 2. Insertion is somehow capable. 3. Good for bulk-loading data into a table. 4. Best if file
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
cardnality ratio for humanresource mangement system
distributed quey processing
Explain in details about the f unctions of DBA ?
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