1. Solution to Q1 Note: the mandatory side of the relationship s are not identified Note: Kroenke uses the ‘rounded corners’ notation for a weak entity

2. Solution to Q2 MemberID,... WORKOUT EXERCISE has a consist sof WorkOutID,... ExerciseID,.... MEMBER M 1 M N WORKOUT EXERCISE workout - exercise WorkOutID,... ExerciseID,.... 11MM (1,N)(1,1)(0,N)(1,1) (0,N) (1,1)

3. Solution to Q3 occupy FULL-TIMEPART-TIME EMPLOYEE POSITION 1 1 EmployeeID... PositionID... 11 (0,1) (1,1)

4. Solution to Q4 USER HARDWARE PROBLEM RESOLVER SOFTWARE assigned to reports is a 1 M M 1 1 UserID,... ProbID,… ResolverID,... ProbID... ProbID,... (0,N) (1,1) (0,N) (0,1)

5. Solution to Q5 employee acquiresassigned projectskill requires supervises M N M N M 1 M N dependents parent of * work history has * given benefits 1M 1 M M N * rounded corners

6. Solution to Q6 - step 1 orchard species disease get has 1 M M N client NM orders resolve M:N relationships

7. Solution to Q6 - step 2 orchard species disease 1 M M customer contains species- disease 1 M 1 (1,N) (1,1) (0,N) (1,1) (0,N) (1,1) order 1 MMN (1,N) (1,1) resolve M:N relationships contains

8. Solution to Q6- step 3 orchard species disease 1 M M customer contains species- disease 1 M 1 (1,N) (1,1) (0,N) (1,1) (0,N) (1,1) order 1 M 1 (1,N) (1,1) order- details 1 M M (1,N) (1,1) (0,N) (1,1)