It also functions as a publishing house and standards-making body. Oracle's Internet File System allows one to store files in an Oracle database. Impedance Mismatch Intrinsic difference in the way in which actual data is represented by databases vs. modelling and programming languages are called the impedance mismatch. For example, data from relational tables need to be joined to construct single objects. A special database object that lets you quickly locate particular records based on key column values.
Indexes are essential for good database performance.
Information Information is the result of processing, manipulating and organizing data in a way that adds to the knowledge of the person receiving it. Also included are many commercial sites. It started with four interconnected computers in 1969 and was known as ARPAnet. When using the Oracle Parallel Server, multiple instances can be started on different machines for a single database. Intersect SQL set operation.