Green Acres Real Estate System GARES

1
Green Acres Real Estate System (GARES)
Context DFD
2
Green Acres Real Estate System (GARES)
Partial Functional Decomposition Diagram
0.0
GARES
1.0
4.0
2.0
3.0
Process
Arrange
Process
Find
Sales
Sale
Buyer
Buyer A
Request
Request
Home
1.1
1.2

more might
4.1
4.2
4.3
be here
Assign
Record
Negotiate
Request
Request
Agent
Seller Info
Purchase
Appraisal
Financing
Agreement
4.2.1
4.2.2
more might


be here
Generate
Record
and
Appraisal
Send
Request
3
Green Acres Real Estate System (GARES)
Level-0 DFD, Logical View
Sellers
1.0
Listing
Personal
Request
Seller
Info
Process
Sales
X1
Request
House Lot
For Sale Info
House Lot
For Sale Info
Buyer Request
2.0
Area R.E. Listings
Process
Address Cross-
Buyer
Buyer
Reference
DS-3
Requirements
Buyer
Request
Requirements
MLS Sheet
Buyer
Requirements
Sellers
3.0
DS-1
Seller Info
Personal
Info
Find Home
for Buyers
House Lot
For Sale Info
Potential Sale
Info
Seller
Buyer Offer
Buyer Offer
X1
4.0
Acceptance or
Signed. Purch.
Arrange
Counteroffer
Agree.
Sale
Appraisal
Request
Finance
Request
Appraisal
Appraiser
Finance Co.
X4
X3
4
Open Road Insurance Co.
Context DFD
insur. appl.
Insur Policy
Insur Coverage Card
Vehicle Regis Request.
Customer
DMV
X1
0.0
X4
Fee Stmt
Vehicle Regis.
Add. to Policy
Open Road
Insurance
Payment
System
Driv Record Report
Fee Stub
Police
Dept.
Driv Record Request
X2
Other
policy contracts
Insurers
X3
.
5
Open Road Insurance System (ORIS)

Functional Decomposition Diagram
0,0
ORIS
1.0
2.0
3.0
4.0
5.0
6.0
Fetch
Fetch
Log New
Select
Send
Bill
Driver
Vehicle
App
Policy
Policy
Customer
Record
Regis.
1.2
1.1
4.3
4.2
4.1
4.4
Match
Update
Validate
Select
Group
Prepare
Policy
Database
Applic.
Candidate
Policies
Policy
Customer
6
Open Road Insurance Co.
Level 0 DFD, Logical View
1.0
insur. appl.
Customer
Log New
Application
X1
name
name
Driv Lic num
license plate num
Driv
Vehicle
Record
Regis
2.0
3.0
cust.
Request
Request.
Police
info
DMV
Fetch
Fetch
Dept.
Driver
Vehicle Reg.
Driv
Vehicle
Record
X2
X4
Record
Regis.
Report
Driv
Vehicle
Record
Regis.
Report
4.0
Other
policy contracts
cust.
Customer
Insurers
info
Select
DS-1
Info
policy
Policy
X3
contracts
Billing
Billing
Info
Info
5.0
6.0
Send
Bill
Policy
Customer
Fee Stmt
Add. to
Insur Policy
Policy
Insur Coverage
Card
Payment
Fee Stub
Customer
Alternatively, could have done
processes 1-3 in "Process
Application", and exploded later.
X1
.
7
Open Road Insurance Co.
Level-0 DFD, Physical View
1.0
Web Form
insur. appl.
Customer
GUI Screen S01
Log New
Application
X1
Bus
Bus
name
name
Driv Lic num
license plate num
Paper Form A12
Driv
Record
Bus
Request
2.0
3.0
cust.
Paper Form A11
Police
Veh Regis Request.
info
DMV
C Mod 002
C Mod 001
Dept.
Fetch
Fetch
Driv
Vehicle
Driver Record
Vehicle Reg.
X2
X4
Record
Regis.
Report
Driv
Vehicle
Record
Regis.
Report
4.0
EDI
Other
policy contracts
LAN
cust. info
Oracle DB
C Mod 003-9
Insurers
DS-1
Clerk
Customer Info
LAN
X3
Select Policy
policy
contracts
LAN
LAN
Billing
Billing
Info
Info
5.0
6.0
Clerk
Billing Agent
Send Policy
Bill
US Post
Customer
Fee Stmt
Add. to
Insur Policy
US Post
Policy
Insur Coverage
US Post
Card
Payment
Fee Stub
Customer
X1
.