NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: DAM 462
COURSE TITLE: AGRICULTURAL DATA SYSTEMS
TIME ALLOWED: 2 ½ HOURS
INSTRUCTION: ANSWER ANY FOUR (5) QUESTIONS. EACH QUESTION CARRIES 14 MARKS.
- Discuss the following ages of information technology (14 Marks)
Premechanical
Petroglyph
Mechanical
Difference Engines
2.(a.) Highlight the significance of information technology to society. (5marks)
(b.) With the aid of a diagram, describe the proposed flow system for farm management. (5marks)
(c.) Highlight 2 applications of Expert system technology in the agricultural sector. (4marks)
3. (a.) You have been asked by your line manager to write out the job description for your newly recruited IT professional. Present your list. (10 Marks)
(b.) Outline the purposes of System Models as postulated by Schoemaker(1982). (4marks)
(a.) Define an Agricultural system. (2 Marks)
(b.) Explain briefly the following terms:
Computer simulation models (6 marks)
Scale simulation models (6 marks)
5. (a.) List 5 important significances of IT in education. (6 marks)
(b.) Your friend is considering creating a database for his farming system. What 4 points would you professionally advice him to look out for when planning this agricultural science and technology database. (8 Marks)
(a.) Define the term simulation model. (4 marks)
(b.) With the aid of a diagram alone, identify the phases/steps in the design process of a decision support system (10 marks)
7. (a.) Define the term “Information Technology”. (2marks)
(b.) Define the following elements of a data model. (12 Marks)
Existence Dependence
Time
Uniqueness
You can get the soft copy for this course or the exam summary answers for this course from 08039407882
Check anoda sample below
