Primary deliverable is an entity-relationship (E-R) diagram or class diagram.
As many as 4 E-R or class diagrams are produced and analyzed:
E-R diagram that covers data needed in the project’s application.
E-R diagram for the application being replaced.
E-R diagram for the whole database from which the new application’s data are extracted.
E-R diagram for the whole database from which data for the application system being replaced is drawn.