Answer Posted / srinivas

Source:SAS

Link :
http://support.sas.com/documentation/cdl/en/basess/58133/HTML/default/a002645445.htm

SAS provides several different methods for combining SAS
data sets. In this section, you will be introduced to five
methods of combining data sets:
1)concatenating
2)interleaving
3)merging
4)updating
5)modifying

When it comes to Merging,there are two types:

1)One-to-one merging
2)Match merging
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