Models  
   - Models are like interactive containers for  grabbing, storing, and taking action on data from other places. They are the  magic that lets builders have a single interface that connects both standard  and custom objects. They also perform create, retrieve, update and delete  operations so you can create and test data without code.   
Models  can connect right to your Salesforce data and let you:     
   - Have  multiple objects in one UI.   
- Connect  data from multiple Salesforce orgs.   
- Have  many records on the same view.   
- Data  Sources   
Bring data together inside a unified user experience with several  out-of-the-box data sources such as:  
   - REST
- OData
- Multiple  Salesforce orgs   
- Several  dialects of SQL (PostgreSQL, MySQL, Redshift, etc.)   
Once data sources are connected, you can mix and match your  data in a single page.