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:
True
Explanation:
The hexadecimal numbering is the most used numeric system for international operations in a computer, in our daily life we use the decimal system but for the CPU use the byte or octet as a basic unit of memory, we need more than 10 digits, and the hexadecimal system has 16, in addition, the binary system is hard to understand.
If( caryear >= 2000 ):
print "probably has air bags.\n"
elif( caryear >= 1990 ):
print "probably has anti-lock brakes.\n"
elif( caryear >= 1970 ):
print "probably has seat belts.\n"
else:
print "probably has few safety features.\n"
It should be true, hopefully I’m right
