Turn on thread page Beta
    • Thread Starter

    Hi Guys! If you do not have anything helpful to say, please go away. Many thanks!
    Anyway, I have not yet learned about sequential files and I am curious to know how:

    a sequential file can be searched more quickly than an ordered serial file
    how one can justify the use of separate entities to store the patient and appointment data

    Thanks for your time, I really appreciate the help.

    A sequential file is simply a file where the data has been ordered acording to a certain criteria of the keys eg. in alphebtical order based on the name field. If you're asking why a sequential file can be searched quicker than a serial file. Well that's because in a serial file, you have to go searching through every single entry to find what you want. While, when it's ordered you can perform various search algorithms on it such as binary search, bubble search etc. which are quicker. To give a real life scenario, it's the difference between going to your library to find a book you want, where everything is ordered vs. finding the book you want in a giant pile of thousands of books. Which one is going to take longer?

    In terms of your second question, I would say it's because of confidentiality reasons. So only the doctor should really have access to the patient data, while it's alright for the receptionists and other workers to have access to the appointment data since they need to make the appointments. But you don't want your receptionists to also have access to the paitent data, so you put them on separate files and simply give the receptionist the appointment data file and the doctor the patient file to look after.
    • Thread Starter

    Hi Bob! You are an absolute genius. That is true you know, in regards to the second answer.
    Thanks for your time and the giant pile ought to take longer

    Thank you again.

    no idea
    • Thread Starter

    (Original post by RegrettingAS)
    no idea
    Not helpful. If you are regretting AS, change what you are doing.
Do you think parents should charge rent?
Useful resources

Study tools


Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.


Make study resources

Create all the resources you need to get the grades.


Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.


Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.