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Data Processing Neco 2016 Free Expo Answers


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Thursday 2nd June 2016
DATA PROCESSING(obj and essay) 10:00am-1:00pm
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DATA PROCESSING:
1-10: DEEBDCCCAA
11-20: BBBAAADEAB
21-30: EDCDADBAEA
31-40: ABCBDADBDB
41-50: DBBEEBDCBA
51-60: AADBCACCDB

DATA PROCESSING



(3ai)
Relational database is a digital database whose organization is based on the relational model of data, as proposed by E. F. Codd in 1970.

(3aii)
-Tables
-forms
-queries

(3aiii)
A program file refers to sets of instructions that are put together to build up the application you will be using. Several files are linked between each other to see the application that pops in your screen.
A data file is basically the application's feeding as it provides what is needed for your program to work and convert single pieces of data on understandable information.
(3bi)
Two way, real-time transmission of audio and video signals between specialized devices or computers at two or more locations via satellite (wireless) over a network such as a LAN or
internet.

(3bii)
1. No time constraint:
2. Dramatic travel saving:
3. Easy communication:
4. Increased productivity:


(3ci)
(i) Reduced updating errors and increased consistency
(ii) Greater data integrity and independence from applications programs

(3cii)
(i) Write a problem statement for what you want to do
(ii) Write an outline, if it is complex






(5)
-Systematic gathering
-Recording
-Analyzing of data
-Collection of data
-Decision making
-Systematic gathering: Is d collection of data frm various sources to gather common knowledge of the people/customers
-Recording: Is the documentation of the data and
-Analyzing of data is when the idea,knowledge dat are collected frm random people are worked on by the research agents
-Collection of data: Is when the research agent use various methods to bring various ideas together from several customers
-Decision making: Is when the data are collected and analysed & are considered for usage





(6a)
(i) Devices with high Processor is faster in accessing of data
(ii) When the memory size of the device is high, it quicks data access.
(iii) When the Content of the device is high, it slows down access of data
(iv) Virus-free device can access data quicly

(6b )
(iii) Homepage: This is the main page of a website which gives detailed information on its owner and provides links to its other parts. Usually it is d first page seen by every visitor, but some sites (such as those of newspapers or portals) display a fresh page everyday, custom-tailored to the individual visitor's preferences.
(iv) ISP: ISP simply means Internet Service Provider. It is a company that provides you with access to the Internet, usually for a fee. The most common ways to connect to an ISP are by using a phone line (dial-up) or broadband connection (cable or DSL).

(9a)
-He decides the demand of the product at that time
-He helps to make arrangement for storage facilities
-He helps to fix the price for the price for the agricultural product
-He helps to look at the quality and quantity of agricultural product to be marketed
-He helps to grade the agricultural product

(9b)
-Facilitator helps to decide where there is the demand for the processed food
-He also helps in fixing the good price for the product
-He decides on how to store the product in the case of excess
-He will decide the quality of the product
-He helps in grading of the product



DATA PROCESSING:
1-10: DEEBDCCCAA
11-20: BBBAAADEAB
21-30: EDCDADBAEA
31-40: ABCBDADBDB
41-50: DBBEEBDCBA
51-60: AADBCACCDB.
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