This use case describes the steps for a user to upload files to their Dropbox folder, including registering for an account, logging in, selecting a file to upload, and receiving a confirmation message once the upload is complete. It also describes possible error scenarios such as insufficient memory or an invalid file format.

2. Identification Summary
TITLE:DOWNLOAD/INSTALL DROPBOX TO DESTOP
SUMMARY: This use case describes to download a displayed folder in the devices
ACTORS:
1.Users --- upload and using the dropbok
2.processor---process the data of the user and display the files
CREATION DATE: JULY 7, 2013 DATE OF UPDATE: JULY 7, 2013
VERSION: V1.0 PERSON-IN-CHARGE:Co, Richard
Flow of Events
PRECONDITIONS:
1.Users should have an E-mail account
2.The device using should have net connection
MAIN SUCCESS SCENARIO:
1.The user should enter to the website www.dropbox.com
2.The user should register for an account.
3.The user log-in his/her account.
4.Then user must click the work “start using “
5.Processor will change the layout or display output
6.User should chose number 2 to download it to destop.
7.Processor reflects out the downloading for the dropbox.
8.After downloading the screen reflect out download successful
9. use-case ends successfully.
ALTERNATIVE SEQUENCE:
A7. Users has no enough memory.
1.Processor will return an error message
2.Processor advises Userto delete some data
3. Userafter deleting data and having an enough memory
4. Use-case proceeds to Step 6.
ERROR SEQUENCE:
E3.User account does not exist/error
1.Processor reflects out an error message
2.User identifies cause of error
a. Wrong password is inputted
1. userrepeats Step 3
b. Account doesn’t exist
1. Processor advices to register again

3. 2. Use-case repeat step 2
3. Use-case ends
POST-CONDITIONS:
1.The file is downloaded/install (status is updated)
2. icon is display in the destop
UI REQUIREMENTS:
1.userID/email address
2.data records
3. processorUI
NON-FUNCTIONAL REQUIREMENTS:
1.Processor UI is responsive within <1 second>.

4. Identification Summary
TITLE:download/install dropbox to other devices
SUMMARY: his use case describes to download a displayed folder in the devices
ACTORS:
1.Users --- upload and using the dropbok
2.processor---process the data of the user and display the files
CREATION DATE: JULY 7, 2013 DATE OF UPDATE: JULY 7, 2013
VERSION: V1.0 PERSON-IN-CHARGE:Co, Richard
Flow of Events
PRECONDITIONS:
1.Users should have an E-mail account
2.The device using should have net connection
MAIN SUCCESS SCENARIO:
1.The user should enter to the website www.dropbox.com
2.The user should register for an account.
3.The user log-in his/her account.
4.Then user must click the work “start using “
5.Processor will change the layout or display output
6.User should chose number 4 and 7 to download it to other devices.
7.Select a device that you would want to download dropbox.
8.Processor reflects out the downloading for the dropbox.
9.After downloading the screen reflect out download successful
10. use-case ends successfully.
ALTERNATIVE SEQUENCE:
A8. Users has no enough memory.
1.Processor will return an error message
2.Processor advises Userto delete some data
3. Userafter deleting data and having an enough memory
4. Use-case proceeds to Step 6.
ERROR SEQUENCE:
E3.User account does not exist/error
1.Processor reflects out an error message
2.User identifies cause of error
a. Wrong password is inputted
1. userrepeats Step 3
b. Account doesn’t exist
1. Processor advices to register again

5. 2. Use-case repeat step 2
3. Use-case ends
POST-CONDITIONS:
1.The file is downloaded/install (status is updated)
2. icon is display in the devices
UI REQUIREMENTS:
1.userID/email address
2.data records
3. processorUI
NON-FUNCTIONAL REQUIREMENTS:
1.Processor UI is responsive within <1 second>.

6. Identification Summary
TITLE:UPLOAD/ADD ITEMS IN THE DROP BOX FOLDER
SUMMARY: This use case describes the steps associated with borrowing library items
ACTORS:
1.User–upload and using the dropbok
2.Processor –process the data of the user and display the files
CREATION DATE: JULY 7, 2013 DATE OF UPDATE: JULY 7, 2013
VERSION: V1.0 PERSON-IN-CHARGE:Co, Richard
Flow of Events
PRECONDITIONS:
1.Users should have an E-mail account
2.The device using should have net connection
MAIN SUCCESS SCENARIO:
1.The user should enter to the website www.dropbox.com
2.The user should register for an account.
3.The user log-in his/her account.
4.User click the upload button
5.Processor would reflect out to let the user Select File or Cancel
6.User choose a file to upload then click open
7.Processor will start to upload the file which the user want to upload
8.After uploading the processor display successfully uploaded
9.Use-case ends successfully.
ALTERNATIVE SEQUENCE:
A7.User reached maximum memory
1.Processor returns an error message “Limit memories is reached”
2.Processor advises user
a. to delete files
b.to upgrade his/her limited memory
3a. Userafter deleting data and having an enough memory
|3b.user confirm to upgrade his/her limited memories
4. Use-case proceeds to Step 4.
ERROR SEQUENCE:
E3.User account does not exist/error
1.Processor reflects out an error message
2.User identifies cause of error
a. Wrong password is inputted

7. 1. userrepeats Step 3
b. Account doesn’t exist
1. Processor advices to register again
2. Use-case repeat step 2
3. Use-case ends
E4. User has maximum memories
1.Processor returns an error message “Limit memory for uploading items is reached”
2.Processor advises user to upgrade his/her limited memory or delete the older files
3.Use case ends
E5. Item format does not accepted
1.Processor returns an error message “Item format is not applicable in the system”
2.Processor identifies cause of error
a. Not applicable format is inputted
1. user repeats Step 5
POST-CONDITIONS:
1.The file is uploaded (status is updated)
2. the files display in the webdropbox
3. the files display in the deopbox folder in the pc
UI REQUIREMENTS:
1.userID
2.Processor UI
3.data records
NON-FUNCTIONAL REQUIREMENTS:
1.Processor UI is responsive within <1 second>.