Slide 2 of 41
Notes:
Relational databases have been very successful in the last two decades. There are many reasons for their success. They offer good performance to many business applications; they offer data independence by separating the specification from the implementation; they provide an easy-to-use, declarative, query language, such as SQL; they have a solid theoretical basis (they all based on relational theory); and they employ sophisticated query processing and optimization techniques.
