1a)
data model is the process of structuring and organizing data in addition data model can also be defined as a description of the organisation of data in data base
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1aii)
i)flat file mode
ii)network model
iii)hierarchical database model
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1b)
i)conceptual data model
ii)logical data model
iii)physical data model
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1bi)
conceptual model is also known as the data model that can be used to describe the conceptual schema when a database system is implemented. It hides the internal details of physical storage and targets on describing entities, datatype, relationships and constraints.
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2 a )
Micro soft offfice word
2 aii )
water mark
2 aiii)
by saving doucument to a secured storage device
2 bi)
icon- is a pictogram or ideogram displayed on a computer screen in order to help the user navigate a computer system or mobile device .
2 bii )
browser - is a software application for retrieving ,presenting and traversing information resources on the World Wide Web .
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3(a) ♡ Ctrl+P
♡ select "pages"
♡ type " 1, 2, 3, 4, 5" in the pages field
♡ select the desired printer
♡ click ok
3b
(i) A pop-
up is a graphical user (GUI) display
area. The pop-up window
containing an advertisement is usually
generated by JavaScript that uses cross-site
scripting (XSS), sometimes with a secondary
payload that uses Adobe Flash. They can
also be generated by other vulnerabilities/
security holes in browser security.
(ii) Pop-up ads or pop-ups are forms of online
advertising on the World Wide Web.
(iii) Open Internet Explorer. Click the
tools button (it is in the top
righthand corner and looks like a
cog), then select internet options.
Go to the Privacy tab, and under
Pop-up Blocker, select the Turn
on Pop -up Blocker check box, and
then tap or click ok.
3c
(i) Microsoft power point
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(6 a)
(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
(6 b)
(i ) Instant messaging is a type of communications service that enables you to create a kind of private chat room with another individual in order to communicate in real time over the Internet, analagous to a telephone conversation but using text – based , not voice – based , communication .
(ii ) E – commerce (electronic commerce or EC) is the buying and selling of goods and services , or the transmitting of funds or data , over an electronic network , primarily the internet .
(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 the 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 ) .
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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
(9 b) – 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.
Source: naijaexams.com.ng
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