Sencha Touch - Data Package

Data package in Sencha touch is responsible for doing any kind of data manipulation either storing or loading the data.
Data packages are related to model, store and proxies.

Concept and Description Link
Model: It is the collection of data and fields with which we display all the values on UI. Description
Store: It is a collection of model instances which basically stores the data locally. In store we write all the events and rest calls to get data. Description
Proxy: It is basically responsible for loading data in store. Mostly we use ajax proxy to load store data. Description