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The Introduction to Oracle Database includes a brief history on some of the key innovations introduced with each major release of Oracle Database. See My Oracle Support (MOS) note Release Schedule of Current Database Releases (Doc ID 742060.1) for the current Oracle Database releases and their patching end dates.
Oracle Corporation is an American multinational computer technology company headquartered in Austin, Texas. [5] Co-founded in 1977 by Larry Ellison, who remains executive chairman, Oracle ranked as the third-largest software company in the world by revenue and market capitalization as of 2020, [6] and the company's seat in Forbes Global 2000 was 80 in 2023.
Pro*C (also known as Pro*C/C++) is an embedded SQL programming language used by Oracle Database DBMSes.Pro*C uses either C or C++ as its host language. During compilation, the embedded SQL statements are interpreted by a precompiler and replaced by C or C++ function calls to their respective SQL library.
A database trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified event occurs. It is a named PL/SQL unit that is stored in the database and can be invoked repeatedly. Unlike a stored procedure, you can enable and disable a trigger, but you cannot explicitly invoke it.
Oracle Corporation calls these variables "substitution variables". Programmers can use them anywhere in a SQL or PL/SQL statement or in SQL Plus commands. They can be populated by a literal using DEFINE or from the database using the column command.
Oracle APEX can be run inside Oracle Database Express Edition (XE), a free entry-level database. Although the functionality of APEX isn't intentionally limited when running on XE, the limitations of the database engine may prevent some APEX features from functioning. Furthermore, Oracle XE has limits for CPU, memory, and disk usage. [19]
In comparing Oracle Internet Directory with its competitors, Oracle Corporation stresses that it uses as its foundation an Oracle database; whereas many competing products (such as Oracle Directory Server Enterprise Edition and Novell eDirectory) do not rely on an enterprise-strength relational database, but instead on embedded database engines similar to Berkeley DB.
The listener process(es) on a server detect incoming requests from clients for connection - by default on port 1521 [5] - and manage network-traffic once clients have connected to an Oracle database. The listener uses a configuration-file - listener.ora - to help keep track of names, protocols, services and hosts.