The correct answer is: B. if high, reduces processing efficiency for sequential and nonsequential files.
A file’s activity is a measure of how often it is accessed. If a file is accessed frequently, it is said to be active. If a file is accessed infrequently, it is said to be inactive.
A file’s activity can affect the processing efficiency of a program. For example, if a program needs to access a file that is active, the program will have to wait for the file to be opened and read before it can continue processing. This can slow down the program.
The activity of a file can also affect the performance of a database. For example, if a database contains a table that is active, the database will have to update the table more frequently. This can slow down the database.
Therefore, it is important to keep the activity of files low to improve the processing efficiency of programs and databases.
Here is a brief explanation of each option:
- Option A: A low percentages of number of records added or deleted from a file. This is not a correct definition of a file’s activity. A file’s activity is a measure of how often it is accessed, not how many records are added or deleted from it.
- Option B: If high, reduces processing efficiency for sequential and nonsequential files. This is a correct definition of a file’s activity. If a file is accessed frequently, it is said to be active. If a file is accessed infrequently, it is said to be inactive. A file’s activity can affect the processing efficiency of a program. For example, if a program needs to access a file that is active, the program will have to wait for the file to be opened and read before it can continue processing. This can slow down the program.
- Option C: Is a measure of the percentage of existing records updated during a run. This is not a correct definition of a file’s activity. A file’s activity is a measure of how often it is accessed, not how many records are updated during a run.
- Option D: Refers to how closely the files fits into the allocated space. This is not a correct definition of a file’s activity. A file’s activity is a measure of how often it is accessed, not how closely the files fits into the allocated space.
- Option E: None of the above. This is not a correct answer. Option B is the correct answer.