Laws differ from theories because laws do not provide an explanation for how things work or could possibly work. A law describes what happens or needs to happen under certain conditions. A law can predict what will happen as long as those conditions are met. <span>For the purposes of this discussion, a "law" is a rule that has been formalised by repeated testing. It is also a generalisation. A theory, on the other hand, is an explanation for an observation that is supported by a large body of evidence. </span>
Answer:
b. False
Explanation:
Difficult economic times, increased global competition, demand for customization, and increased consumer sophistication does not direct companies to hire more employees and outsource middle managers.
Rather, companies tend to invest new technologies, information systems to satisfy the needs in global competition, consumer sophistication and customization.
Middle managers outsourced cannot deal these issues effectively, therefore they need to be company employees.
In difficult economic times, companies does not want to hire extra employees because of increased cost.
Answer:
C. External Data
Explanation:
On the External Data tab, you can find import and export commands located in Access.
Answer:
Explanation:
Transitive dependency
In this case, we have three fields, where field 2 depends on field 1, and field three depends on field 2.
For example:
Date of birth --> age --> vote
Partial dependency
It is a partial functional dependency if the removal of any attribute Y from X, and the dependency always is valid
For example:
Course and student these tables have a partial dependency, but if we have the field registration date, this date will depend on the course and student completely, we must create another table with the field registration date to remove this complete dependency.
If we remove or update the table registration date, neither course nor student must not change.
