When developing applications for mobile devices (Windows Store or Windows Phone) we have to deal with connected data scenarios using cloud web services, and disconnected scenarios where data is stored locally. In this session we will explore all options to store information locally and remotely (files, Isolated Storage, IndexedDB, SQLite, NoSQL DBs and Azure Mobile Services), and how to build a system for synchronizing data when using a combination of these systems.

4. acasquete

7. The applications require a local storage

8. File System
App Data Store
C# / JavaScript
SQLite
IndexedDB
Javascript

12. Windows Azure Mobile Services are ideal for:

14. Optimistic Concurrency Control

17. File System
App Data Store
C# / JavaScript
SQLite
IndexedDB
Javascript

18. many browsers

19. // Opening a Database
var
// Assume db is a database variable opened earlier
var
var
// Define a person
var
// Perform the add
var

22. // Opening a Database
var db = new PouchDB('dbname');
// Add an object
db.put({ _id: ’me@email.com', name: ’Alex', age: 66 });
// Subscripbe to changes
db.changes({
onChange: function() {
console.log('Ch-Ch-Changes');
}
});
// Replicate to external DB
db.replicate.to('http://example.com/mydb');

24. http://www.windowsazure.com/en-us/develop/mobile/tutorials/handle-databasewrite-conflicts-dotnet/
http://msdn.microsoft.com/en-us/library/windowsazure/hh456371.aspx
http://www.sqlite.org/docs.html
http://pouchdb.com