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Commercial Data Processing Worksheet 1 - DOC - DOC

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					Standard Grade Computing Studies                          Commercial Data Processing



Commercial Data Processing Worksheet 4

Name:                                                                Class:

   1. Do CDP systems use interactive or real time processing?
      (choose from...)

       Why is this type of processing required?



   2. Many companies have multi-user databases.

          a. What is a multi-user database?


          b. State three advantages of having a multi-user database.
             (1)
             (2)
             (3)

   3. Why is security an issue for most companies with a multi-user
      database?


   4. What must someone have to gain access to a multi-user database?



   5. Some users have different levels of access.

          a. What is meant by the term “different levels of access”?



          b. Why are different levels of access required for different
             users?



   6. Describe four other security measures that a company could put in
      place to protect their data.
       (1)
      (2)
      (3)
      (4)

                       The Gordon Schools Computing Department
Standard Grade Computing Studies                          Commercial Data Processing




   7. Backing storage media can have either random or sequential access.
      For each type of backing storage media listed below state whether
      it has random or sequential access.

          a.   CD-RW:                            (choose from...)
          b.   Hard Disk:                        (choose from...)
          c.   DAT:                              (choose from...)
          d.   USB Flash Drive:                  (choose from...)
          e. Magnetic Tape:                      (choose from...)

   8. Describe two uses for sequential access media.
      (1)
      (2)

   9. State a reason why random access media is used often in CDP
      systems.




                       The Gordon Schools Computing Department

				
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