An operational data store is a hybrid between a data warehouse or data mart and an OLTP application. Users of operational data stores expect to perform individual transactions to modify data at the same time that other users run ad hoc queries against the database.
Fragmentation schemes should ensure that data required to satisfy a query is local to one coserver.
Fragmentation schemes must provide fragment elimination to assist in serial plan creation. The fragmentation scheme might require as many as 5 columns.