Answer:
Examples of Fact-finding techniques includes:
-
Prototyping
-
Questionnaires
- Research and sites visit
-
Interviews
Explanation:
It is important to note that a database system is a tool that allows users to define, create, maintain, and control access to a collection of logically related data and description of these data, designed to meet the information needs of an organization.
<u>Prototyping
</u>
<em>Advantage:</em> enables testing and understanding of the system in advance before final implementation of solution, while requiring less time for research.
<em>Disadvantage:</em> Training and Development cost consumes resources.
<u>Research and site visit </u>
<em>Advantage :</em> better time management if the problem has been researched upon before.
<em>Disadvantage:</em> appropriate permission is often needed before using research materials.
<u> Questionnaires
</u>
<em>Advantage: </em>This technique is not expensive, and responses can be calculated and analysed quickly.
<em>Disadvantage:</em> There may be Incomplete answers received from users and body language of user cannot be observed.
<u>Interviews</u>
<em>Advantage:</em> The body language of interviewees is been perceived.
<em>
Disadvantage: </em>Interviewing is time consuming and costly.
Answer:
People prefer composite faces.
Explanation:
If we take some face's picture, and we make it digital, we could make a composite or averaged face, and when we compare composite faces with originals pictures, people prefer the composite faces because there was symmetry in those faces.
For example:
There was a research where a digitalized student faces men and women, researchers make a composite face for every original, people prefer composite face against the original face.
Answer:
Step One - problem/opportunity identification (V)
Step Two - Analysis (III)
Step Three - Design (II)
Step Four - Development (I)
Step Five - Testing and Installation (IV)
Explanation:
In the field of software development, or systems engineering, SDLC which refers to software development cycle refers to a systematic way of building software applications, it shows unique stages with the outcome of each stage dependent on the previous, step has a unique task which range from the planning, analysis, development, testing and installation of the information system.
