Answer: knowing what you spend".
Explanation:
The reason to use cash for making purchases is to know how much one has spent.
When we use cash rather than using credit card, it's easier for one to know how much that has been spent. Also, one can easily know when he or she need to stop spending. Therefore, the correct answer is "knowing what you spend".
Answer and Explanation:
a) Key for the relation courses is HS.
b) FD's are already minimal basis, as no attributes can be removed from the left side, right side is having only single attributes and none of the FD can be removed as given in the question.
c) By using the 3NF synthesis algorithm, the final set of relations obtained will be CT, HRC, HTR, HSR, CSG (FD'S are already proved to be minimal basis in part (b)). All the relations are in BCNF.
Answer:
Option C is correct.
Explanation:
When the supply of system engineers rises while demand for such workers falls at the similar period, Wages will drop while competition for employment rises.
According to the law of demand, when the supply of one commodity is increased then the demand for other commodity falls. So, the following option C is correct according to the following scenario.
Other options are incorrect because they are not relevant according to the following scenario.
