1 of 1 people found this helpful
You can find the basic difference in google, however for the latter question about functionality in tableau 10 please refer below.
In previous Tableau versions, you needed the Data-Blending solution to join data from different databases. This feature works well enough in one-to-one relationships, but unwanted asterisks pop up when we want to perform a join in one-to-many relationships.
The functionality implemented in tableau 10 was 'cross database join' which allows us to cross data between different sources easily which is similar to blending.
2 of 2 people found this helpful
I had the very same questions in my mind initially.. I found this explanation at a very basic level comparing to Excel very convincing...
Another couple of very concise but clear explanation on Joins Vs Blends...
This explanation on Tableau site is also worth throwing a glance
As Kishore mentioned there are a many more informative sites that will come up on googling. But these two I had found very useful to clear my foggy mind on when to use what..
Hope it helps...
Thanks a lot. Its very helpful.