oraserv.cs.siena.eduoraserv.cs.siena.edu/.../PreliminaryDesign_DFD_Final.docx · Web viewA Data Flow Diagram (DFD) is pictorial representations of the transfer and transformation

Preliminary DesignData Flow Diagrams

Networking for Antique Truck Owners (N.A.T.O.)

Requested by:

Dr. Timoth LedermanProfessor

Department of Computer ScienceSiena College

Delivered By:

Infinite Solutions

Prepared By:

Robert DeSarboTimothy Egan

Alexander EvanciewAlexander Johnson

Kelly MonroeDavid Nopper

December 8, 2009

Infinite Solutions Networking for Antique Truck Owners (N.A.T.O.) 1Preliminary Design: Data Flow Diagrams

Table of ContentsN.A.T.O.

Table of Contents.........................................................................................................................................................2

N.A.T.O.........................................................................................................................................................................2

1. Data Flow Diagrams.................................................................................................................................................3

2. Data Flow Diagram Key............................................................................................................................................3

3. Context Diagram......................................................................................................................................................4

4. Level 0 Diagram........................................................................................................................................................6

5. Level 1 Process 1: Authentication............................................................................................................................7

6. Level 1 Process 2: Manage Accounts........................................................................................................................8

6.1. Level 2 Process 2.1: Modify Account.....................................................................................................................9

6.1.1. Level 3 Process 2.1.3: Create Account..............................................................................................................10

6.2. Level 2 Process 2.2: Modify Profile......................................................................................................................11

6.2.1. Level 3 Process 2.2.1: Remove Information.....................................................................................................12

6.2.2. Level 3 Process 2.2.2: Add Information............................................................................................................13

6.2.3. Level 3 Process 2.2.3: Edit Information............................................................................................................14

6.2.4. Level 3 Process 2.2.4: Hide Information...........................................................................................................15

7. Level 1 Process 3: Manage Directions....................................................................................................................16

8. Level 1 Process 4: Manage Searches......................................................................................................................17

8.1. Level 2 Process 4.1: Search Last Name................................................................................................................18

8.2. Level 2 Process 4.2: Search Username................................................................................................................19

9. Level 1 Process 5: Manage Map Markers...............................................................................................................20

9.1 Level 2 Process 5.1: Modify Personal Markers.....................................................................................................21

9.2 Level 2 Process 5.2: Modify Events......................................................................................................................22

9.2.1 Level 3 Process 5.2.2: Modify Event Information..............................................................................................23

9.2.1.1. Level 4 Process 5.2.2.1: Delete Event............................................................................................................24

9.2.1.2. Level 4 Process 5.2.2.2: Create Event............................................................................................................25

9.2.1.3. Level 4 Process 5.2.2.3: View Event..............................................................................................................26

9.2.1.4. Level 4 Process 5.2.2.4: Join Event................................................................................................................27

9.2.1.5. Level 4 Process 5.2.2.5: Withdraw From Event.............................................................................................28

9.2.1.6. Level 4 Process 5.2.2.6: Edit Event................................................................................................................29

10. Level 1 Process 6: Mapping..................................................................................................................................31


1. Data Flow DiagramsA Data Flow Diagram (DFD) is pictorial representations of the transfer and transformation of data within a system at various levels of detail. The four main elements of the diagrams are External Entities, Processes, Data Stores, and Data Flows. The most general diagram is a Context Diagram, which simply shows the human users of the system as External Entities. The Level 0 Diagram depicts the Data Flows between External Entities, the general system Processes, or functions, and the Data Store, which is the database. Each Process of the Level 0 Diagram is numbered; these numbers act as the next Level of Diagram. The Level 2 and 3 Diagrams break down their corresponding Process into more detailed Processes and Data Flows.

2. Data Flow Diagram KeyThere are four major symbols used in the data flow diagrams. External Entities are either sources or recipients that contribute or receive data or information to the system. The Entities either supply or terminate data flow. A Process transforms or directs data flows; the Process’ name is the action that the Process performs. Data Stores represent locations that simply hold data temporarily or permanently. The final object is a Data Flow. The Data Flow arrow symbolizes data flowing to or from a Process, External Entity, or Data Store. A Data Flow must originate or end at a Process and be named in accordance with the data it is carrying.


3. Context DiagramThe context diagram is the most basic of the data flow diagrams. This is the highest level and represents the overall system (N.A.T.O.) and its interaction with its External Entities, in our case the Users of our system.


4. Level 0 DiagramThe Level 0 diagram is an expansion of the Networking for Antique Truck Owners process in the Context diagram. This level shows all the major processes of N.A.T.O. and their interactions with N.A.T.O.’s Users.


5. Level 1 Process 1: AuthenticationThe Authentication process is broken down to depict the process it takes for the user to login to the application. Two processes will be needed for the user to log on. A password and username will need to match for the login process to complete.


6. Level 1 Process 2: Manage AccountsThe Manage Accounts diagram outlines the options the users have to modify their accounts and to modify their profiles. Modifying the accounts deals with the functionality of the user, while modifying profile deals with the account information, like username, first name, phone numbers, etc.


6.1. Level 2 Process 2.1: Modify AccountThe Modify Account diagram outlines the options the users have to modify their account. Members will have the ability to request their account to be created and updated. Members will have the ability to delete their account.


6.1.1. Level 3 Process 2.1.3: Create AccountThe Create Account diagram outlines the required information the user has to input to create their account. The user must enter a valid email address, a username that matches their OldGMTrucks username and a password. Once the account has been approved by an Administrator or the Super Administrator, the database will be updated with the new user included.


6.2. Level 2 Process 2.2: Modify ProfileThe Modify Profile diagram outlines the options the user has when they want to modify their profile. The users have the ability to add, edit and remove information on their profile.


6.2.1. Level 3 Process 2.2.1: Remove InformationThe Remove Information diagram shows what information the user is allowed to remove from their profile. Each user can remove the last name, first name, address, pictures, phone numbers and a website link.


6.2.2. Level 3 Process 2.2.2: Add InformationThe Add Information diagram shows what information the user is allowed to add to their profile. Each user can add the last name, first name, address, pictures, phone numbers and a website link.


6.2.3. Level 3 Process 2.2.3: Edit InformationThe Edit Information diagram shows what information the user is allowed to edit in their profile. Each user can edit the password, email address, last name, first name, address, pictures, phone numbers and a website link.


6.2.4. Level 3 Process 2.2.4: Hide Information


7. Level 1 Process 3: Manage DirectionsThe Manage Direction diagram shows the process it takes to get directions. The user will only have the ability to use this function if they have an address entered in their profile. The user will send in a “to” and “from” address. A Google Applet will then send the directions to the user that requested them.


8. Level 1 Process 4: Manage SearchesThe Manage Searches diagram outlines the options that the user can search by. A user can either search by last name or username. The database will return the user that is being search for.


8.1. Level 2 Process 4.1: Search Last NameThe Search Last Name diagram outlines the process it takes to search for a user by their last name. A member, administrator or the Super Administrator will enter a last name to search by and the database will run a query to find the user that is being searched for and return it.


8.2. Level 2 Process 4.2: Search UsernameThe Search Username diagram outlines the process it takes to search for a user by their username. A member, administrator or the Super Administrator will enter a username to search by and the database will run a query to find the user that is being searched for and return it.


9. Level 1 Process 5: Manage Map MarkersThe Manage Map Markers diagram outlines the process it takes to create an event or personal marker.


9.1 Level 2 Process 5.1: Modify Personal MarkersThe Manage Pins diagram outlines what the user can do with their personal markers. Members are allowed to request two personal markers without the approval of an Administrator or the Super Administrator. Members are only allowed to edit and delete the personal pins they created. Administrators and the Super Administrator are able to create more than two personal markers. Administrators and the Super Administrator have the ability to edit or delete other Administrators and Members personal pins if necessary.


9.2 Level 2 Process 5.2: Modify EventsThe Modify Events diagram shows that the event marker is stored separately from its information. When a user creates an event the information they input will be stored in a database, while the marker they place will use a Google Map applet.


9.2.1 Level 3 Process 5.2.2: Modify Event InformationThe Modify Event Information diagram outlines the actions that a user has when modifying an event. All users will have the ability to create an unlimited amount of events. A Member will only be able to edit and delete the events they create. Administrators and the Super Administrator have the ability to edit and delete any event created. All users will have the ability to view, join and withdraw from any event.


9.2.1.1. Level 4 Process 5.2.2.1: Delete EventThe Delete Event diagram outlines what information will be deleted when deleting an event from the database. When a user deletes an event a record will be kept of the event in the database but it will no longer be visible to the users.


9.2.1.2. Level 4 Process 5.2.2.2: Create EventThe Create Event diagram outlines what information will be stored when creating an event.


9.2.1.3. Level 4 Process 5.2.2.3: View EventThe View Event diagram outlines what information will be viewed when a user is viewing events. All users will be able to view any event that is created.


9.2.1.4. Level 4 Process 5.2.2.4: Join EventThe Join Event diagram outlines what information will be stored when joining an event. Users will have the ability to add guests and input the type of transportation they are using to get to the event.


9.2.1.5. Level 4 Process 5.2.2.5: Withdraw From EventThe Withdraw from Event diagram outlines what information will be removed when a user no longer wishes to attend the event.


9.2.1.6. Level 4 Process 5.2.2.6: Edit EventThe Edit Event diagram outlines what information can be modified when a user wishes to make changes to the event they created.



10. Level 1 Process 6: MappingThe Mapping diagram outlines the user’s interactions with the map. The User will be able to pan through-out the map, zoom in and zoom out. To do this, an applet will be used will refresh the map according to the user’s requests.


Documents

oraserv.cs.siena.eduoraserv.cs.siena.edu/.../PreliminaryDesign_DFD_Final.docx · Web viewA Data Flow Diagram (DFD) is pictorial representations of the transfer and transformation