We have four individual applications for Immigration, Labor, Citizen Registration System (like the Social Security System in the US) and Traffic and Licensing Department. All these 4 applications have individual databases. I have come up with a 3rd Normalized Form Logical Data Model for each one of the applications. I have to merge these 4 Data Models into one master Data Model. I have created a single data model for all the shared objects between the four applications (IMM, LAB, CRS and TLD). How to I handle the non-shared data objects among the four applications.