1. DataFlow Diagram – Level 0

2. DDF – Level 1 Breaks down each process
Shows exactly what each data is and where it flows
Six Processes, Six Different Breakdowns

3. DDF – Level 1, User Login & Display Favorites

4. DDF – Level 1, Produce Favorite Stocks & Display Stock Quotes

5. DDF – Level 1, Registration & Administrator Login

6. Modules
These Level 1 Processes, data flows, external entities, and data stores are the basis for what determines the major modules.
The objects for the modules can be viewed here

7. Web Site Modules – Users
New User (register.php)
Add a new user to database
Existing User (logon.php)
Query database, if user and password is valid connect to user home page (my_stocks.php)

8. Web Site Modules – Users cont.
User Home Page
Add Stock
Remove Stock
Search for a Stock
Log out
Log Out
Logs a user out of the website

9. Web Site Modules - Administrators
Log On (admin.php)
Verify administrator Id and password
Delete Users (delete.php)
A query of users to be deleted will show up once an administrator has successfully logged on
Once a user has been deleted the database will get updated

10. Phone Application Modules
Access given only to existing users
Log On (login.wml)
Queries database, if user and password is valid, connect to user homepage (home.wml)
Home Page
Provides the user to check stored stocks (mystocks.wml), view market info (market.wml), search the internet for a stock by using the stock symbol (search.wml)

11. Phone Application Modules – cont.
Searching application allows:
Gives an error message if stock symbol entered is invalid
Allows the user to view current market info
Allows the user to add that stock to their favorites
Log out
Provide user to exit out of phone application

12. Database Structure
Data Dictionaries can be found here

13. Technical Overview
Developing an application to obtain real-time stock information from your mobile phone
Using PHP, MySQL, HTML, WML, WMLScript and SQL
We will be obtaining the real-time stock information from Yahoo! Finance CSV files.

14. Technical Issues : HTML vs. WML
Modules will use one set of data to produce either HTML or WML depending on device initiating the request

15. Technical Issues : Network
If the network goes down or the Yahoo! server crashes, we must present the user with an error message, but will not crash Fast Stocks
We could store old stock quotes, but storing out of date information is counter-productive

16. Technical Issues : Network
PHP provides built in functionality for connecting and reading Internet files, so no additional protocol software needs to be written
Sessions will be initiated each time a user registers and logs into the system from either the mobile phone or a web browser

17. Technical Issues : Database
MySQL has no set limit to the number of concurrent database connections, it depends on the server configuration
MySQL handles record locking natively
MySQL handles security by using a configurable Privilege System

18. Technical Issues : Database
PHP has functionality to work with MySQL databases
Administrative functions will be include to manage the database
phpMyAdmin is installed and will allow powerful remote database management

19. Software Used Excel Microsoft Word Ulead PhotoEditor
Microsoft Access (for now)

20. Planning