Combine SAS datasets

[anming]

what is the significance of two kinds of combinations, concatenating and appending? For the forth two datasets are simply integrated in a bigger set and the latter is attached even without creating a new dataset. The second dataset is attached in some cases by Force. Are these two extensively used in practical dataset manipulation?

[PaigeMiller · Accepted solution]

You can join two data sets left to right (in various ways), this is concatenating. You can join two data sets top to bottom, this is appending.

[Reeza]

Are these two extensively used in practical dataset manipulation?
Every single day and every single project in some manner.