Question
Which of the following is not a disadvantage of
trying to modify a sequential access file?
Overwriting a record with another record of the
same size is very difficult.
It may be necessary to rewrite every record in the
file to make a slight change.
Modifying data can potentially destroy other data.
Things that are stored in the same number of “raw
data” bytes internally may not take up the same
amount of space in a file.
trying to modify a sequential access file?
Overwriting a record with another record of the
same size is very difficult.
It may be necessary to rewrite every record in the
file to make a slight change.
Modifying data can potentially destroy other data.
Things that are stored in the same number of “raw
data” bytes internally may not take up the same
amount of space in a file.
Ask by Lambert Warner. in the United States
Mar 28,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
Overwriting a record with another record of the same size is not a disadvantage for a sequential access file.
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Beyond the Answer
When dealing with sequential access files, one of the key challenges is that they are designed for orderly reading from the beginning to the end, making it tricky to modify records. If you try to change a record or decrease its size, you might end up with a gap in the file that could disrupt the entire sequence!
However, it’s worth noting that when you overwrite a record with one of the same size, it remains a relatively straightforward operation. There’s also a catch: the differences in raw data bytes versus file space can lead to confusion, but it’s not a disadvantage of modifying the file itself!
