ABSTRACT
Relational database systems manage data about enterprises. Most organizations have adopted relational database systems as the technology for new applications development.
Relational database systems are very good at what they do-provide concurrency control, crash recovery, and scalability for the data they manage. The most important feature of relational database systems, however, is not their ability to store and retrieve data, but their ability to search the data that they manage. It is primarily their flexible search capabilities that set relational database systems apart from first-generation database systems and file systems.
