Oracle
Oracle is one of the largest vendors in the enterprise IT market and the shorthand name of its flagship product, a relational database management system (RDBMS) that's formally called Oracle Database. The database software sits at the center of many corporate IT environments, supporting a mix of transaction processing, business intelligence and analytics applications.
Like other relational database technologies, Oracle Database utilizes a row and column table structure that connects related data elements in different tables to one another; as a result, users don't have to store the same data in multiple tables to meet processing needs. The relational model also provides a set of integrity constraints to maintain data accuracy; those checks are part of a broader adherence to the principles of atomicity, consistency, isolation and durability -- known as the ACID properties -- and are designed to guarantee that database transactions are processed reliably.
Oracle Database editions
Oracle Database is available for licensing in four separate editions that provide different levels of functionality and scalability. Oracle Database Enterprise Edition includes all of the software's features and is designed for use by large organizations running high-volume transaction processing, data warehousing, analytics and internet applications. The Standard Edition provides a more limited set of features for workgroup and departmental applications; there are three versions of it, including a Standard Edition 2 that became available with later releases of Oracle Database 12c.
