Integrating External Data – Indirect and External Lookups.

• Finally Managed to complete integration project. – My First.
• I configured this earlier & am aware of this on high level but wanted to do this handson Project.
• First Step – I created External Data source called OrdersDB using heroku URL provided in trailhead
• Using Validate & sync, i synched two external objects Orders & Order Details.
• Now on external object Orders, i changed datatype of customerid field from number to Indirect Lookup to account and target value to customerid. (Note: while installing the package, customerid text fied – EXternal + unique got created and values also got populated)
• An indirect lookup relationship is a new field type introduced with Salesforce Connect. It links an external object to a standard or custom object in the same way that a regular lookup relationship links standard or custom objects. 
• Boom, the Account page’s Related List now has Order.

• Now on external object OrderDetails, i changed datatype of orderID to External Lookup to order and target value to OrderID
• An external lookup relationship is another new field type introduced with Salesforce Connect. This type links an object to an external object.We can link one external object to another external object
• Boom, the Order page’s Related List now has orderdetails