Chapter 7. The data store

This chapter covers

  • Using the data store
  • Understanding data proxies
  • Exploring writers and validations

To create a real-world application, you need a way to persist data. Data persistence allows users of your application to access data between sessions, so the data should be stored on a medium that enables it to be accessed after your application has been stopped and started again.

Data persistence can happen by updating or retrieving the data from the components on screen using Ajax techniques if you’re implementing simple applications. But if you’re creating an Ext JS application that involves advanced interaction logic on the client side, you can use the functionality available in the Ext JS data store.

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