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IRM4723 Assignment 3 2025 (Answer Guide) - Due August 2025

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Course IRM4723 (IRM4723)
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IRM4723 Assignment 3 2025 (Answer Guide) - Due August 2025 VERIFIED AND CERTIFIED ANSWERS. WRITTEN IN REQUIRED FORMAT AND WITHIN GIVEN GUIDELINES. IT IS GOOD TO USE AS A GUIDE AND FOR REFERENCE, NEVER PLAGARIZE. Thank you and success in your academics. UNISA, 2025

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IRM4723
Assignment 3 2025
(Answer Guide) -
Due August 2025

QUESTIONS WITH 100%
VERIFIED AND
CERTIFIED ANSWERS.






, 1|Page


IRM4723 Assignment 3 2025 (Answer Guide) - Due August 2025
VERIFIED AND CERTIFIED ANSWERS. WRITTEN IN REQUIRED FORMAT AND WITHIN
GIVEN GUIDELINES. IT IS GOOD TO USE AS A GUIDE AND FOR REFERENCE, NEVER
PLAGARIZE. Thank you and success in your academics.
UNISA, 2025



Contents
Question 1 .................................................................................................................................................. 2
1.1 Describe each of the three levels of management that usually exist in an
organisation........................................................................................................................................... 2
1.2 What kind of decision support does a database management system (DBMS) give
to the first level YOU mentioned?.................................................................................................... 2
1.3 What kind of decision support does a database management system (DBMS) give
to the second level YOU mentioned? ............................................................................................. 3
1.4 What kind of decision support does a database management system (DBMS) give
to the third level YOU mentioned? .................................................................................................. 4
Question 2 .................................................................................................................................................. 5
2.1 What is concurrency control?.................................................................................................... 5
2.2 Give and briefly describe three ways in which you can control deadlocks in a
DBMS....................................................................................................................................................... 6
Question 3 .................................................................................................................................................. 7
3.1 What is a distributed database management system (DDBMS)? ..................................... 7
3.2 Briefly identify and describe the advantages of a DDBMS ................................................ 7
3.3 Provide and briefly describe the disadvantages of a DDBMS........................................... 9
References ............................................................................................................................................... 10

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