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NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JUNE/JULY 2013 EXAMINATION

COURSE CODE: DAM 461

COURSE TITLE: STATISTICAL DATABASE SYSTEM (2 UNITS)

TIME ALLOWED: 21/2 HOURS

INSTRUCTION: ANSWER ANY FOUR QUESTIONS IN ALL

 

 

1a.       Use an example to differentiate between the Simple (Atomic) and Composite Attributes.           [51/2 marks]     

1b.       Describe any four database models.                                                           [12 marks]

 

2a.       List and explain briefly any 3 Characteristics of database approach          [7.5 marks]

2b.       Differentiate between the Query restriction and Perturbation.                 [10 marks]

 

3a.       Define Relational database.                                                                           [5.5 marks]

3b.       State the three rules for partitioning the database                                       [12marks]

 

4a.       Write short note on Decision Tree                                                               [7 marks]

4b.       State any three forms in which maximum Cardinality can be represented    [10.5 marks]

 

5a.       Describe Database Model                                                                             [5 marks]

5b.       List the five general database naming conventions.                                    [12.5 marks]

 

6b.       What is Data Model?.                                                                                   [4 marks]

6c.       Enumerate the functions that can be perform by Database System Utilities and Tools.    [12 marks]


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