1. Business Requirements
System should allow new user to register
and buy membership online.
Employee should be able to edit and add
the daily reports and update the
data store.
The system should include facilities like
Easy to prepare weekly and monthly reports.
Automatic alerts should be sent to the members if there is a new crime in the area.

2. CONTEXT LEVEL

3. LEVEL 0 DFD External Entity Users Employees Police department
Processes
Registration
Report request
Report generation process
Processing data
Data store
User and Employee data
Payment data
Report
Crime data
Membership invoice

4. LEVEL 0

5. LEVEL 1 REGISTRATION External Entity Users Employees Processes
Employee Registration
Users Registration
Membership Type
Payment Process
Data store
User and Employee data
Payment data
Membership invoice

6. LEVEL 1 REGISTRATION

7. LEVEL 1 REPORT REQUEST External Entity Users Processes
Crime rate based on zip code
Automated report generation process
Data store
Report
Crime data

8. LEVEL 1 REPORT REQUEST

9. LEVEL 1 PROCESSING DATA External Entity Users Police department
Processes
Query Processing
Automated data updating and classification
Data store
Report
Crime data

10. LEVEL1 PROCESSING DATA

11. SYSTEM COMPONENTS
PROCESS
EXTERNAL
ENTITY
EXTERNAL
ENTITY
DATABASE

12. STRUCTURE CHART

13. ENTITY TABLES AND ATTRIBUTES
Entity: User and Employee User_id User_lname User_fname User_address User_phnum User_ id Emp_id Emp_lname Emp_fname Emp_address Emp_ssn Emp_position Emp_startdate
Entity:Payments
Payment_id
Payment_type
Payment_amount
Payment_status
Payment_date
Entity:Membership invoice
Membership_id
Membership_type
Membership_status
Entity:Crime data
Crime_id
Crime_time
Crime_location
Crime_premises
Crime_offence type
Crime_zipcode
Entity: Reports
Reports_id
Reports_type
Reports_count

14. E-R Diagram

15. Physical Design Entity: Users user_ID user_username user_password
Entity: Employee
emp_ID
emp_username
emp_password
emp_fname
emp_lname
emp_sex
emp_dob
emp_street
emp_city
emp_state
emp_zip
emp_phone
emp_sal
Entity: Users
user_ID
user_username
user_password
user_lname
user_fname
user_street
user_city
user_zip
user_
user_phone
user_creditcard_num
user_membexp_date
Entity: Membership invoice
Membership_id
Membership_type
Membership_status
Entity: Payments
Payment_id Payment_type
Payment_type
Payment_status
Payment_date
Entity: Reports
Report_id
Report_type
Reports_count

16. Membership Invoice Table

17. Report Table

18. User Login Form

19. User Registration Form

20. Reports [Location] x [Date] x [Premises]
[Location] x [Offense Type] x [Time Of Day]
[Location] x [Date] x [Premises]

21. More Reports.. [Location] x [Date] x [Offense Type]
[Time of Day] x [Premises] x [Offense Type]

22. Q & C