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What is Cursor?
Cursor is a database object used by applications to manipulate data in a set on a row-by- row basis, instead of the typical SQL commands that operate on all the rows in the set at one time.
In order to work with a cursor we require performing some steps in the following order:
Declare cursor
Open cursor
Fetch row from the cursor
Process fetched row
Close cursor
Deallocate cursor
Is the Process before and after the swap are the same? Give reason. Process before swapping is residing in the primary memory in its original form. The regions (text, data and
Expalin the History Of Parallel Computers The researches with and implementations of use of the parallelism started long back in the 1950's by IBM Corporation. The IBM STRETCH
Q. Shared-memory programming model? In shared-memory programming model tasks share a common address space that they read and write asynchronously. Several mechanisms like semap
Enumerate the Design reusability of VHDL VHDL. Functions and Procedures may be placed in a package so that they are available to any design-unit which wishes t
Define busy waiting and spinlock. When a process is in its critical section, any other process that tries to enter its critical section must loop continuously in the entry cod
Explain a multiprogramming operating system? A multiprogramming operating system: It is system which allows more than one active user program or part of user program to be st
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What are the restrictions on Subscreens? Subscreens have various restrictions. They cannot: Set their own GUI status Have a named OK code Call another screen
What is Page stealing? Ans. Taking page frames other working sets is called Page stealing.
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