merrylarry
Re- waec may/June assistance
(May 13 2015 at 09:15pm)
data processing loading.......
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merrylarry
Re- waec may/June assistance
(May 14 2015 at 03:42pm)
4a
(i)Data security refers to protective
digital privacy measures that are
applied to prevent unauthorized access
to computers, databases and websites.
Data security also protects data from corruption.
(ii) A data risk assessment is the process
of identifying potential hazards an
organization may face and analyzing
methods of response if exposure occurs.
(bi) Access Control is any mechanism by which a system grants or revokes the
right to access some data, or perform
some action. Normally, a user must first
Login to a system, using some
Authentication system. Next, the Access
Control mechanism controls what operations the user may or may not
make by comparing the User ID to an
Access Control database (bii) Access is the flow of information
between a subject and an object. Access
controls are security features that
control how users and systems
communicate and interact with other
systems and resources. c.
1. Data policies, procedures, standards
2. Planning- development of
organization’s IT strategy, enterprise
model, cost/benefit model, design of
database environment, and administration plan.
3. Data conflict (ownership) resolution
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merrylarry
Re- waec may/June assistance
(May 14 2015 at 03:42pm)
1a(i)An operating system (sometimes
abbreviated as “OS”) is the program
that, after being initially loaded into
the computer by a boot program,
manages all the other programs in a
computer. (aii) Booting the computer -Performs basic computer tasks eg
managing the various peripheral
devices eg mouse, keyboard
-Provides a user interface, e.g.
command line, graphical user interface
(GUI) -Handles system resources such as
computer’s memory and sharing of the
central processing unit (CPU) time by
various applications or peripheral
devices -Provides file management which refers to the way that the operating
system manipulates, stores, retrieves
and saves data. (aiii) -System software is an integral
part that aids in the computer’s
functioning. It manages the computer
resources in ways that they can
operate in tandem.
-Application software is created for users. They manage their specific tasks
to suit their needs like a media player
of word processors
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merrylarry
Re- waec may/June assistance
(May 14 2015 at 03:43pm)
2a)
(i) A database is a collection of
information that is organized so that it
can easily be accessed, managed, and
updated. In one view, databases can be
classified according to types of content: bibliographic, full-text, numeric, and
images.
(ii) A database management system
(DBMS) is a collection of programs that
enables you to store, modify, and
extract information from a database 2b.) -data dictionary management
– data storage management
– data transformation and presentation
– security management,
-multiuser access control
2c) . 1. Disc destruction
2. Smash it up
2d.
1. Never store your documents on the
same drive as your operating system
2. Back up your files regularly, no matter where they’re stored
3. Beware of user error
4. Keep hardcopies of your documents
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merrylarry
Re- waec may/June assistance
(May 14 2015 at 04:34pm)
Data-Processing-Obj
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