oracle 20111-10-24
basic concepts:
database management system (DBMS)
relational database management system(RDBMS)
object-relational database management system (ORDBMS).
system global area (SGA)
program global area (PGA)
Database instance:An instance is a set of memory structures that manage database files.
Scheme Objects:In Oracle Database, a database schema is a collection of logical
data structures, or schema objects. A database schema is owned by a database user and has the same name as the user name.

Tables:
Index:
An index is an optional data structure that you can create on one or more columns of a
table.

Oracle9i&10g编程艺术