MDS 2014 - How to display Multiple MDS Entitys in Single Excel Sheet

                I have requirement to show multiple entities' in Single Excel sheet and update and Publish them Back to MDS.

For Example.

We have - 

I have Entity 1 and Entity 2.  I need attribute 1 and attribute 2 from Entity 1 and Attribute 3 and Attribute 4 from Entity 2. 

What We need -

I need to see the Attribuite1, Attribute 2, Attribute 3 and Attribute 4 in Single Excel sheet (Inner join between Entity 1and Entity 2).

Update the Attribuite1, Attribute 2, Attribute 3 and Attribute 4  in Excel sheet and publish back MDS. The Data should update in two different entity's.

How can we do this on MDS 2014. 

Thank You,

Santosh Chaudhari