1. A cross system analytics system comprising: sets of in memory database tables stored on random access memory of the system, each set of tables corresponding to data from a different source system to provide separation of data from each source system; a separate in memory database schema for each set of tables corresponding to each source system; a replication system coupled to provide replication of data from the source systems into the sets of in memory database tables; and an analytics engine to execute cross system views of data in the sets of tables to provide a cross system central and consistent view for reporting and analyzing data for an organization having multiple systems with different database schemas.