An SAP InfoSet is crucial for ABAP query.
At its simplest definition, an InfoSet determines which tables and/or fields within a table, queries may reference. To accomplish this, InfoSets are typically based upon table joins or logical databases (LDBs). Therefore, an InfoSet is, for lack of a better term, a form of Ubber View (Super View).
Where as
An infotype is a collection of logical and/or business-related characteristics of an object or person. Right now SAP has infosets only in HR Modules, but it is safe to say that items such as materials have similar structures that act like infotypes. The one outstanding difference that I really see is the concept of time constraints that infotypes use for interpreting data during a specified period.
Hope this helps
Vinodh Balakrishnan
