Search results with tag "Relational database design"
A Suite of Case Studies in Relational Database Design
macsphere.mcmaster.caAlthough the development of relational database system theory and practice can be traced to the 1970 seminal paper A Relational Model of Data for Large Shared Data Banks by E.F. Codd [1], the explosive growth of the use of relational database management systems came with the advent of Internet. Databases not only represent significant ...
Relational Database Design - Database System Concepts
www.db-book.com14 Chapter 8 Relational Database Design Answer: a. a should be a primary key for r 1, and a should be the foreign key from r 2, referencing r 1. b. If the foreign key constraint is not enforced, then a deletion of a tuple from r 1 would not have a corresponding deletion from …
Relational Database Design by ER- and EERR-to- Relational ...
www.techtud.comER-to-Relational Mapping Algorithm Step 1: Mapping of Regular Entity Types. For each regular (strong) entity type E in the ER schema, create a relation R that includes all the simple attributes of E. Choose one of the key attributes of E as the primary key for R. If the chosen key of E is composite, the set of simple attributes that form it will together form the primary key of R.