Answer:
The answer is "The Volume Bitmap".
Explanation:
It is a hidden file, that records the available space and it can't accessible on the drive. It accelerates the process of publishing new documents onto the database by keeping the device from testing the position of each file, and the wrong option can be described as follows:
- The MDB is used to define the data volume, that's why it is wrong.
- The volume control block is used to maintain the system heap, that's why it is wrong.
 
        
             
        
        
        
The correct answer is usually referred to as '<span>confidentiality'.</span>
        
             
        
        
        
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.
 
        
             
        
        
        
The camera that <span>is a high-end digital camera that has interchangeable lenses and uses a mirror to display on its screen an exact replica of the image to be photographed is called an SLR. Hope this answers the question. Have a nice day.</span>