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How Oracle works internally [message #359984] Wed, 19 November 2008 01:54 Go to next message
Olivia
Messages: 519
Registered: June 2008
Senior Member
A few questions that I want to know:

How oracle works internally?

How is the main importance of using dual table? How or why only Dual table?


I did search in Google [ http://oreilly.com/catalog/orinternals/chapter/ch01.html ] and got some information. But is there any link from where I can have more information.


Thanks
Olivia

[Updated on: Wed, 19 November 2008 01:57]

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Re: How Oracle works internally [message #359994 is a reply to message #359984] Wed, 19 November 2008 02:52 Go to previous message
Michel Cadot
Messages: 68776
Registered: March 2007
Location: Saint-Maur, France, https...
Senior Member
Account Moderator
Quote:
How oracle works internally?

Quite well.
I think it is not the first I point you to the Database Concepts, you really should read it.

Quote:
How is the main importance of using dual table?

Because Oracle does not support SELECT without FROM.

Quote:
How or why only Dual table?

Explain question.
How what?
Why what?
Why "only"?

Regards
Michel

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