National Open University of Nigeria,
University Village Plot 91 Cadastral Zone, Nnamdi Azikiwe Express Way, Jabi, Abuja
Faculty of Sciences
JULY 2018 EXAMINATIONS
DAM462 Agricultural Data Systems – (2 Credits)
Answer Question 1 and three other questions in 2 Hours.
Total of 70, Question 1 is 25 marks and others 15 marks each
1(a) Highlight five points to show the significance of IT in education: (5 marks)
1(b) Define the term “Information Technology”. (3 marks)
1(c) Discuss the challenges related to sharing, exchanging and dissemination of knowledge and technologies (4 marks)
1(d) Highlight the different stages into which the development of agricultural science and technology database can be divided (3marks)
1(e) Differentiate between the 4 main eras of digital computing. (4 marks)
1(f) With the aid of a diagram, describe the proposed flow system for farm management (6mks)
2(a) List four (4) means of disseminating information in agricultural extension (2mks)
2(b) Define the following;
i) Sitemap ii) Decision Support System iii) Expert System (6marks)
2(c)Explain the concept of decision support system (2mks)
2(d) Explain the word Expert system (2mks)
2(e) Write short note on the need of expert system (3mks)
3(a) Using tables, highlight the differences and similarities between modular system design method and object-oriented system design method (7 marks)
3(b) Highlight 2 applications of Expert system technology in the agricultural sector (4 marks)
3(c) Discuss the 2 Order levels in the hierarchy of agricultural systems which are primarily the domain of the Applied Agricultural Science (4 marks)
4(a) Discuss the evolution of Information Technology. (3 mks)
4(b) Who is an IT personnel and what roles do they perform? (3mks)
4(c) Explain the role of information technology in the Nigerian agricultural sector. (3 mks)
4(d) Explain the term System Modeling (3 mks)
4(e) Write a short note on Agricultural Systems (3 mks)
5(a) Write a short note on trends and experienced for database development and management in agriculture (5mks)
5(b) Write briefly on data model. (3mks)
5(c) State six recommendations in promoting management and database development in the area of agriculture (3mks)
5(d) Write a short note on challenges on sharing, exchanging and disseminating information in agricultural extension. (4mks)
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