Oracle-SQL-in-10-Minutes (diamond-torrents.info)

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Added on February 6, 2011 by in Other > Unsorted
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Description

Oracle is such a complex system that without analogies it’s really very hard to comprehend and grasp the concept of Oracle architecture and it’s working. If you are new to Oracle or an experienced DBA, understanding of concepts is the key to success not only in Oracle Certifications but in real world. Also once you understand the concepts then there is nothing left for cramming.



Oracle System is basically divided into two things namely Oracle Instance and Oracle Database. We have taken the analogy of a Genie (Ghost/Djin): just like the one you might have seen in the movie/story of “Aladdin & the Magic Lamp”. When Aladdin rubbed the lamp; Genie became available and fulfilled all his commands. Similarly when you double click “Oracle” icon in your system, Oracle Instance gets alive and waits for users information/data related commands to fulfill, as it is a magnificent “Data Management Genie”.



Oracle Instance is something with which users interact in terms of storing and retrieving information. Anything that is going into the database or coming out of the database has to be through Oracle Instance and to communicate with Oracle Instance we need to learn Genie’s language: SQL. So after learning SQL, Aladdin will be fully capable to command the Instance.

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Oracle-SQL-in-10-Minutes (diamond-torrents.info)