need support(

need support(

Hi,
please help me to solve these 2 problems

1. How would you normalize this relation???
Consider a Relation R(A,B,C,D,E,F) with the following dependencies (A,B)->C, (A,D)->E, D->B, E->C

Do lossless join decomposition of R so it is in BCNF normal form

2.Consider the relation R, which has attributes that hold schedules of courses and sections at a university; R = {CourseNo, SecNo, OfferingDept, Credit-Hours, CourseLevel, InstructorSSN, Semester, Year, Days_Hours, RoomNo, NoOfStudents}. 
Suppose that the following functional dependencies hold on 
{CourseNo} -> {OfferingDept, CreditHours, CourseLevel}
{CourseNo, SecNo, Semester, Year} -> {Days_Hours, RoomNo, NoOfStudents,
InstructorSSN}
{RoomNo, Days_Hours, Semester, Year} -> [Instructorssn, CourseNo, SecNo}

Try to determine which sets of attributes form keys of R. How would you
normalize this relation?


Thanks