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The method of file organization in which data records in a file are arranged in a specified order according to a key field is known as the
- a)Direct access method
- b)Queuing method
- c)Predetermined method
- d)Sequential access method
- e)None of these
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The method of file organization in which data records in a file are ar...
Sequential Access Method for File Organization
Sequential access method is a file organization technique in which data records in a file are arranged in a specific order according to a key field. This key field is usually a unique identifier for each record in the file. The records are stored in the file sequentially according to the value of the key field.
Advantages of Sequential Access Method
1. Simple to implement: The sequential access method is easy to implement because it does not require any complex data structures or algorithms.
2. Efficient for large files: This method is efficient for large files because the records are stored in a specific order, which makes it easier to retrieve records that are close together.
3. Low cost: The sequential access method is a low-cost method of file organization because it does not require any special hardware or software.
Disadvantages of Sequential Access Method
1. Slow access time: The access time for records in a sequential file is slow because the records have to be read in sequence until the desired record is found.
2. Limited flexibility: This method is not flexible because records cannot be easily inserted or deleted from the file without disrupting the sequential order.
3. Not suitable for frequent updates: The sequential access method is not suitable for files that need to be frequently updated because it requires rewriting the entire file each time a record is added, deleted, or modified.
Conclusion
Sequential access method is a file organization technique in which data records in a file are arranged in a specific order according to a key field. It has advantages such as simplicity, efficiency for large files, and low cost, but also has disadvantages such as slow access time, limited flexibility, and not suitable for frequent updates.
Sequential access method is a file organization technique in which data records in a file are arranged in a specific order according to a key field. This key field is usually a unique identifier for each record in the file. The records are stored in the file sequentially according to the value of the key field.
Advantages of Sequential Access Method
1. Simple to implement: The sequential access method is easy to implement because it does not require any complex data structures or algorithms.
2. Efficient for large files: This method is efficient for large files because the records are stored in a specific order, which makes it easier to retrieve records that are close together.
3. Low cost: The sequential access method is a low-cost method of file organization because it does not require any special hardware or software.
Disadvantages of Sequential Access Method
1. Slow access time: The access time for records in a sequential file is slow because the records have to be read in sequence until the desired record is found.
2. Limited flexibility: This method is not flexible because records cannot be easily inserted or deleted from the file without disrupting the sequential order.
3. Not suitable for frequent updates: The sequential access method is not suitable for files that need to be frequently updated because it requires rewriting the entire file each time a record is added, deleted, or modified.
Conclusion
Sequential access method is a file organization technique in which data records in a file are arranged in a specific order according to a key field. It has advantages such as simplicity, efficiency for large files, and low cost, but also has disadvantages such as slow access time, limited flexibility, and not suitable for frequent updates.
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The method of file organization in which data records in a file are ar...
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The method of file organisation in which data records in a file are arranged in a specified order according to a key field is known as the sequential method....
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The method of file organisation in which data records in a file are arranged in a specified order according to a key field is known as the sequential method....
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