Forward engineering: Once the database designer is satisfied with the physical model, the tool can automatically generate a SQL Data Definition Language (DDL) script that can either be directly executed on the RDBMS environment or saved to a file.
The most common are Relational Database Management Systems (RDBMS) that are capable of handling large volumes of data such as Oracle, IBM DB2, Microsoft SQL Server, Sybase, and Teradata.
Typically, the user interface runs on a desktop PC or workstation and uses a standard graphical user interface, functional process logic that may consist of one or more separate modules running on a workstation or application server, and an RDBMS on a database server or mainframe that contains the computer data storage logic.
The software which Oracle Corporation markets as Oracle Data Guard forms an extension to the Oracle RDBMS.
Significant technologies incorporated into the applications include the Oracle database technologies, (engines for RDBMS, PL/SQL, Java, .NET, HTML and XML), the "technology stack" (Oracle Forms Server, Oracle Reports Server, Apache Web Server, Oracle Discoverer, Jinitiator and Sun's Java).
Oracle RAC allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, thus providing clustering.
In the late 1970s, Relational Software, Inc. (now Oracle Corporation) saw the potential of the concepts described by Codd, Chamberlin, and Boyce and developed their own SQL-based RDBMS with the aspirations of selling it to the U.S. Navy, Central Intelligence Agency, and other U.S. government agencies.