Database Reference
In-Depth Information
Microprocessor (CPU) communicates with the RAM is much
faster (Electric Speed, speed with which electric current travels
from one point to another or in other words speed of light)
compared to the speed with which CPU interacts with the hard
drive (Hard Drives involves a mechanical movement of motors
inside the hard drive).
If you ask me regarding my life 15 years back, day by day e.g.
what I did everyday in January, similarly in February and so on
up till today. I would never be able to tell you that. But what I
can tell, are the major events that happened in my life in the past
fifteen years e.g. I got my BS in Electrical Engineering July
2000 or my father bought a brand new PC for me in 1993 etc. If
you start utilizing the Note Books (Papers) and start writing the
story about your life each and every day then you can tell
everything regarding your past day by day. Similarly Oracle
Instance has to utilize the data files to make the data/information
permanent.
Oracle System
Human System
Oracle Instance + Oracle
Database
Human Brain + Note Books
(Papers etc.)
Oracle Instance is composed
of background processes &
memory architecture
Human brain is composed of
background
processes
&
memory architecture.
Figure 4-5: Study of Human Brain working can really help us in
visualizing Oracle Instance and how it works.
Human brain is far more complex than what I explained. The
sole purpose is to develop the analogy, which helps in
understanding and leaves fewer burdens on brain to swallow the
principles.
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