1. Using Databases in the RememberHack Week 5

2. Databases Organized collection of data Intended to organize, store, and retrieve large amounts of data easily Examples:

3. Organized Information Lists  Ordered data  Example: phone tree Maps/Dictionaries  Key/Value pair  Example: phone book Flat-file databases  Many categories  Example: address book Relational databases  Categories across files  Example: Facebook

4. Data Key – label for what’s inside Value – data that’s inside Example:  Key = your name  Value = your school name

5. Databases in App Inventor TinyDB stores data directly on the phone and will only used by that phone TinyWebDB stores data on a web datebase that can be shared among phones

6. TinyWebDB Accessed through the web ServiceURL Store key – put into DB Retrieve key – get value out of DB

7. TinyWebDB http://techchallengetinydb.appspot.com

8. Remember Hack

9. Resources If you have problems Read the App Inventor book on databases (pages 305-317) Post questions to the Technovation Challenge Google Group

10. Reminder: Weekly Reflections What did your team like about this week? What challenges did your team have this week? Anything else your team would like to share?

11. Share with us on Twitter & Facebook Tweet us: @_technovation_ #technovation Like us on Facebook: Technovation Challenge