A is an Object Oriented (OO) database with object and Extensible Markup Language (XML) capabilities. In a OO database, all data is stored in multidimensional tables that are composed of rows and columns.
B Control Structures parse and execute SQL statements, and retrieve and return results to the user or application.
C Server Processes (such as the control file and online redo log files) ensure the integrity, availability, and recoverability of user data.
D contains user data, metadata, and control structures. Metadata, or data about the data, is the collection of information on disk that permits Oracle software to manage user data.
E Administrator (DBA) is the sole person who manages Oracle. In large, enterprise environments, the job cannot be divided among several DBAs, because only one person must take care of everything.