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Marrrta [24]
4 years ago
10

Periodically adding, changing and deleting file records is called file. A) Updating B) Upgrading C) Restructuring D) Renewing E)

None of the above
Computers and Technology
2 answers:
Yakvenalex [24]4 years ago
8 0
The answer is updating , which is updating the contents of the of the records in a file speaking in terms of file organization and databases
igomit [66]4 years ago
4 0
Periodically adding, changing and deleting file records is called file updating. The correct answer is A. 
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Read 2 more answers
Part 3:<br> Please answer
Levart [38]

Answer:

a) 4 processes

b) 2 resources

c) R1: 2 instances

   R2: 2 instances

d) R2

e) R1

f) R1

g) No resource

h)  R1

i) R2

j) R2

k) No

l)No deadlock

Explanation:

You need to know that the resources that are required by the processes for completion are shown by the request edge and the resources allocated are shown by the allocation edge. And thus, we can find what resources are allocated to the process, and required for the completion accordingly. And here again, the cycle is created, and hence deadlock may or may not occur. However, we see that resources have multiple instances and get freed on time. And hence, deadlock does not occur.

Like,

P4 uses R2 and free one instance of R2.

P3 then uses one instance of R2 and free R2.

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