Relational database schema integration by overlay and redundancy elimination methods

Relational database schemas integration is important in various areas such as merging information systems of two or more companies, merging database systems of two or more departments of one company. This paper illustrates a relational database schema integration methods called dasiaoverlay and redundancy elimination methodspsila. There are many different methods in overlaying different relational database schemas and there are many different methods in eliminating redundancies in relational database schemas. This paper presents the particular methods on overlaying relational database schemas and eliminating redundancies in relational database schemas. These methods are novel and efficient in relational database schema integrations.