There is 4 Questions

Please answer all questions and write by computer

Thanks

The first picture is clear Second picture I'll put a link, but I hope it solved by computer:

http://www.chegg.com/homework-help/questions-and-answers/convert-given-dfd-equivalent-system-flowchart-exact-conversion-necessary-hint-students-use-q19441428

It's the third link. please put anther answer

http://www.chegg.com/homework-help/questions-and-answers/let-s-consider-enterprise-called-brotherbikes-brotherbikes-manufactures-bicycles-resells-t-q19441652

qustion 4

4.Consider this table StudentTable:

CollegeName	IDCollege	Address	level	StudentName	StudentID
cci	1	Dammam	1	N1 LN1	s123123
cci	1	Ryadh	3	N2 LN2	S456456
Business administration	2	Abha	2	N3 LN3	S789789

a. Could you tell where the one fact-one place rule is violated in this table?

b.Reverse engineer to get the ER model that this table must represent

c. What is the correct relational model?

1 Draw Level 0 DFD for the given Context Level DFD Investors Creditors sem Customers Employees RSWS Cash Cash Suppliers 2 Convert the given DFDinto its equivalentsystem Flowdhart Exact is not necessary. Hint Students can useOrder Receiving Officer, Order Processing Officer, and Cashier as Areas of Responsibility