Primary objective of this lecture is to presentation on Database Design Theory. Database design theory encapsulates a diverse range of topics related to the study and research from the theoretical realm involving databases and data bank management systems. Theoretical aspects of data management consist of, among other places, the foundations involving query languages, computational intricacy and expressive power of queries, limited model theory, addiction theory, foundations involving concurrency control in addition to database recovery, deductive data source, temporal and spatial data source, real time data source and Web facts.