Title: Chapter 2 Exploring the Database Architecture
Course: RITA MC - ORACLE ADMINISTRATION I > Section: Unit 1 - Database Administration I

An Oracle server consists of two entities: the instance and the database. The instance is
memory structures and processes; the database is files on disk. They are separate, but
connected. During the creation process (detailed in Chapter 4), the instance is created
first, and then the database during the startup process (detailed in Chapter 5) first the instance is
started, and then the database is opened. In a typical single-instance environment, the relationship
of instance to database is one-to-one, a single instance connected to a single database, but always
bear in mind that there are more complex possibilities for distributed environments.

Chapter 2 Learning Outcomes:

- Explain the Memory Structures
- Describe the Process Structures
- Summarize the Storage Structures

*Quizzes for Chapters 1 through 5 are all open until Exam 1 date.

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