Waec 2019 data processing Essay and Obj Expo Answer

 

 

 

 

 

 

 

 

*WAEC DATA PROCESSING*

1-10: BDBABDDBDB
11-20: DABBADCCBB
21-30: CCABBAAADD
31-40: CDBAABAABB

 

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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5ai)
soft ware
i)micro soft word
ii)web browser
5ai)
hard ware
i)printer
ii)computer system
5aii)
i)he must have internet access
ii)he must have correct receipants email
address
5aiii)
i)Not connected to the internet
ii)slow network
iii)the size of the attachment may be too big.
5aiv)
printer

5b)
i)web browser
ii)mozila fire fox
iii)google chrome
iv)internent explorer

6ai)
drop cap

6aii)
i)type the first word or sentence
ii)highlight the first character
iii)click on drop cap from insert menu

6aiii)
a)click enter after the second paragraph
b)click on colums from page layout on menu bar
c)click on two colums from more colums option
d)mark on line between box select from this point forward on apply to box click ok

6b)
i)shapes
ii)clip air

6ci)
i)launch the coreldraw application
ii)click on ellipse tool or F+ on Keybord and drag

6cii)
i)on the coreldraw enviroment
ii)click on text tool and click on the place to add the caption
iii)type “Happy Birthday” from the keyboard

6ciii)
i)highlight the caption
ii)click on fill tool
iii)select red colour from fill colour dialog box

6civ)
i)highlight the caption and click on text on the menu bar
ii)click on text to path
iii)click on the circular object with the arrow

 

(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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