Get premium membership and access questions with answers, video lessons as well as revision papers.
1.UNIQUE
Each entity should be identified discriminately without any possible mis-identification.
2.BRIEF.
A good code should be that which can be easily handled by the human beings, hence should be short and
concise in structure.
3.GROWTH.
The coding structure should allow for further in-corporations of other codes naturally with ease, to
allow expansion. This will cater for the coding of additional items within the structure.
4.RECOGNIZABILITY.
A good code structure should avoid the use of characters or digits that may be easily confused from the
other characters or digits.
5.SYMBOLS.
Larger codes should be broken down with symbols to ease interpretation or transcription of the code.
6.DISTINCT.
The codes should be non-identical to avoid confusion.
Jonmhumble answered the question on November 21, 2017 at 22:34
- State and explain factors to consider when selecting an input device/facility for a computer system.(Solved)
State and explain factors to consider when selecting an input facility for a computer system.
Date posted: November 21, 2017. Answers (1)
- State examples of input devices.(Solved)
State examples of input devices.
Date posted: November 21, 2017. Answers (1)
- Outline the advantages of Optical Character Reader.(Solved)
Outline the advantages of Optical Character Reader.
Date posted: November 21, 2017. Answers (1)
- Name and explain three tasks that the systems analyst would undertake in the design phase of information systems development process.(Solved)
Name and explain three tasks that the systems analyst would undertake in the design
phase of information systems development process.
Date posted: November 21, 2017. Answers (1)
- Explain why Local Area Networks (LANs) have been successful in improving the flow of data and information in organisations(Solved)
Explain why Local Area Networks (LANs) have been successful in improving the flow of data and information in organisations.
Date posted: November 21, 2017. Answers (1)
- Decision support systems (DSS) help to fulfil management's requirements for computerized information systems by assisting them in complex and unstructured tasks.Required:Describe the relevance and uses...(Solved)
Decision support systems (DSS) help to fulfill management's requirements for computerized information systems by assisting them in complex and unstructured tasks.
Required:
Describe the relevance and uses of a DSS to management accountants.
Date posted: November 21, 2017. Answers (1)
- Why do organisations automate reasoning or decision making tasks which human beings are naturally better able to perform than computers?(Solved)
Why do organisations automate reasoning or decision making tasks which human beings are naturally better able to perform than computers?
Date posted: November 21, 2017. Answers (1)
- State six ways in which a business can use Desktop Publishing (DTP).(Solved)
State six ways in which a business can use Desktop Publishing (DTP).
Date posted: November 21, 2017. Answers (1)
- Your managing director is in two minds about establishing a company website and has asked you to produce a "balanced report" on the pros and...(Solved)
Your managing director is in two minds about establishing a company website and has asked you to produce a "balanced report" on the pros and cons. You have already written several pages on the benefits and you have just started on a section headed "Anxieties".
What sub-headings might this section include?
Date posted: November 21, 2017. Answers (1)
- Risks to data are relevant to manual as well as computerised systems. With computerized systems however", the risks are greater, because data are held on...(Solved)
Risks to data are relevant to manual as well as computerized systems. With computerized systems however", the risks are greater, because data are held on magnetic files and cannot be seen or read by the human eye.
What risks are particularly relevant to data storage on a magnetic medium?
Date posted: November 21, 2017. Answers (1)
- It is important to bear in mind that information may be relevant to people outside the organisation as well as to its internal management and employees....(Solved)
It is important to bear in mind that information may be relevant to people outside the organisation as well as to its internal management and employees. Sometimes it happens that some decisions relating to an organisation are taken by outsiders.
State six examples of decisions relating to an organisation that may be taken by outsiders
Date posted: November 21, 2017. Answers (1)
- The adoption of database systems as a way of managing information systems is gaining popularity over standard file: Required:(i) State the features of a database management...(Solved)
The adoption of database systems as a way of managing information systems is gaining
popularity over standard file.
Required:
(i) State the features of a database management system that provide data security and
integrity.
(ii) What problems are caused by data redundancies?
(iii) Centralized control avoids unnecessary data redundancy or duplication.
What precautions should be taken into account -in the process of establishing a
centralized data control system to avoid data redundancy?
Date posted: November 21, 2017. Answers (1)
- Using your own experience, explain why more and more software is being purchased for windows environment as opposed to character based environment(Solved)
Using your own experience, explain why more and more software is being purchased for windows environment as opposed to character based environment.
Date posted: November 21, 2017. Answers (1)
- Explain Ways in which a GUI makes a system user friendly(Solved)
Explain Ways in which a GUI makes a system user friendly.
Date posted: November 21, 2017. Answers (1)
- Graphical user interface (GUI) ,have proved to be more user friendly than current character based systems.Other than the graphical user interface, give a summary of...(Solved)
(i) Graphical user interface (GUI) ,have proved to be more user friendly than current character based systems.
Other than the graphical user interface, give a summary of at least three interfaces you would use in "the design of systems.
(ii) Briefly explain three ways in which GUI makes a system user friendly.
Date posted: November 21, 2017. Answers (1)
- During systems development life cycle (SDLC): the systems analyst uses some tools to model the users requirements in such a way that he is able...(Solved)
During systems development life cycle (SDLC): the systems analyst uses some tools to model the users requirements in such a way that he is able to communicate his understanding of the users needs.
Required:
Identify and describe three tools the systems analyst may use. to model the systems
requirements.
Date posted: November 21, 2017. Answers (1)
- One important aspect of information-systems management is the physical and managerial location or siting of the information system within an organisation.Explain two information systems location...(Solved)
One important aspect of information-systems management is the physical and managerial location or sitting of the information system within an organisation.
Explain two information systems location options indicating circumstances under which each siting allocation is appropriate.
Date posted: November 21, 2017. Answers (1)
- A company needs information on whicb to base decisions concerning the current operations and future plans. Explain areas of management control where computers are used or...(Solved)
A company needs information on which to base decisions concerning the current operations and future plans. Explain areas of management control where computers are used or can be used.
Date posted: November 21, 2017. Answers (1)
- Four companies A., B, C and D, which have similar activities but are not part of a group,have the following computer configurations,Company A: Three stand-alone...(Solved)
Four companies A, B, C and D, which have similar activities but are not part of a group,
have the following computer configurations,
Company A: Three stand-alone micro-computers (CPU, VDU, Keyboard, hard disk and
mouse) each having its own printer.
Company B Small office with 11 micro-computers linked in a Local Area Network (LAN).
Each micro-computer has its own processing ability, but is linked via the
LAN to central printers, disk storage, file server and tape streamer devices.
The LAN is completely self-contained", This means that there are no modems or other similar external devices attached to it.
Company C Four processing locations connected by a Wide Area Network (WAN). Each
location has a LAN in the same configuration as company B, although there is also a
dedicated landline to two of the three. offices (offices are connected in a ring to two of
the other offices). Each server is updated with. data from the other three locations at 15
minutes interval.
Company D Twenty processing locations, each with its own LAN in the same configuration
as company B. All locations are connected in a star configuration to head
office. File servers at each location are updated from head office after every
five minutes, Each location has a reserved external., telephone line for
selected customers to use. Orders by customers are
transmitted direct on to the company D‘s Computer system
Required:
(a) State, with reasons, for each company, what security procedures should be applied to
ensure there is no unauthorized access to its computer system.
(b) Company B is planning to establish additional branches and wants to upgrade its
systems to duplicate those of company D.
State and explain the data communication systems you would recommend
Date posted: November 21, 2017. Answers (1)
- Why are expert information systems not popular in business systems?
(Solved)
Why are expert information systems not popular in business systems?
Date posted: November 21, 2017. Answers (1)