0. Cable Movie Guide Service
3.1 Context Diagram
Context Diagram
Legend
Client using our
web service
Cable Movie Guide Service
System Boundary .
Data source
Client using our
web service
Client
Web service call
http interaction
This is our context diagram. Here is our system. Both the input and output data format are MS Access, MDB file. Here, our user will interact with our system.
Source Site
.....
Source Site

1. Rule Executor Detect Channel
3.3 C&C View (1/3)
Overall Architecture
Legend
Front End
Boundaries
Node
Process L L T
Components
Database Manager
Rule Executor
Coordinator
Rule Executor Detect Channel
User Interface
POI Data Manager R R
Rule Executor
Rule Executor Coordinator
POI Database R R R
Application Database
Connectors
Local Call-Return
Rule Executor 1
Rule Executor 2
Rule Executor N L W R
Remote Call-Return
Thread Communication T … R
JDBC Read Only C R C R C R
POI Management DB W
JDBC Read/Write
POI DB File
POI DB File
Replica 1
POI DB File
Replica 2
POI DB File
Replica N R
File Read Only C
File Copy
Event Channel

2. Web Service Client Web Service interface Mediator Legend Data Source
Boundaries R
SystemBoundary
Components
Web Service interface
Client
Web Service Interface
Mediator
Mediator
Web Wrapper
Source site
Connectors R
Web Service
Call-Return
Web wrapper
(TV Program)
Web wrapper
(Movie Info)
Web wrapper
(DVD Info)
Web wrapper
(Script Info)
Web wrapper
(Content
Download Info)
Call and Return
Data
Source
Data
Source
Data
Source
Data
Source
Data
Source

3. 3.5 Alternative Architectures (1/2)
POI Data Deployment: Separated vs. Centralized
*Legend is on page 12.
Separated database
Centralized database
Rule Executor
Coordinator
Rule Executor Detect Channel
Rule Executor
Coordinator
Rule Executor Detect Channel R R R R R R
Rule Executor 1
Rule Executor 2
Rule Executor N
Rule Executor 1
Rule Executor 2 …
Rule Executor N
Now, I’ll show some other options rather than our choice. Instead of distributing the POI data file, we may share one database server through remote JDBC connection. … C R C R C R R
POI DB File
Replica 1
POI DB File
Replica 2
POI DB File
Replica N
POI DB