DATA PROCESSING 2019 ANSWER

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DATA PROCESSING OBJ:
1-10: BDBABDDBDB
11-20: DABBADCCBB
21-30: CCABBAAADD
31-40: CDBAABAABB
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ANSWERS:

(1a)
Teleconferencing is the use of telecommunication devices to hold discussions between participants in different locations.

(1b)
(i) For cash withdrawals
(ii) For deposits
(iii) For transfer of funds

(1ci)
Modem transmits digital data over communication lines. The conversion of the signals to/from analog to digital is the main purpose of a modem.

(1cii)
(i) Electronic Mails
(ii) Telephone messages

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(4ai)
Entities: are usually recognizable concepts, either concrete or abstract, such as person, places, things, or events which have relevance to the database

(4aii)
Attribute: refers to a database component, such a table. It also may refer to a database field. In other words Attributes describe the instances in the row of a database.

(4aiii)
Relationships is a common type of database whose data is stored in tables.

(4bi)
Cardinality refers to the uniqueness of data values contained in a column. In other words High cardinality means that the column contains a large percentage of totally unique values and Low cardinality means that the column contains a lot of “repeats” in its data range.

(4bii)
(i)one-to-one (1:1)
(ii)one-to-many (1:M)
(iii)many-to-many (M:N)

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SECTION B
(Answer Two Questions)
(5ai)
CD-ROM

(5aii)
I - CD-ROM technology
II - It switch on the CPU
III - Carefully store in a cool dry place.

(5b)
P - It displays video and graphical information generated by the computers graphics adapter allowing the user to interact with the computer.
Q - It carries out the instructions of a computer program.
R - It is used to position a cursor on a computer screen.
S - It is used to input characters and functions in the computer system by pressing button or keys.
T - It converts digital signals generated by the computer into analog signals which can be transmitted over a telephone or cable line and transforms incoming analog signals into their digital equivalent.

(5c)
(i) Click on your workspace while still holding down your mouse button drag to draw your shape and release button when done


Solving More

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(6ai)
Highlight the table created containing the values presented and se lect the bar chart icon and se lect the bar and instantly this transform to the bar chart

(6aii)
-Column: Click the column before the particular space you wish to add another column and right click then sel ect insert from the drop down menu and click on column either to top or down

(6b)
Click the document you wish to add page button to.
Go to the design tab on the menu bar on the page background sel ect page borders and click on the page border tab se lect the desire design and choose a color se lect the width drop down arrow and choose a line width and click OK to apply the line border.

(6c)
Highlight the text " Waec Exam". Se lect Hyperlink from the menu bar as this will open the insert hyper link windows, type the In the web page address or website address

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ANSWER LOADING......
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