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| Re: how is segment different from object? [message #577531 is a reply to message #573338] |
Mon, 18 February 2013 04:27   |
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TuneMyQuery
Messages: 9
Registered: February 2013
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Junior Member |
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Hi,
A segment consists of actual data stored in the database : table, index, table partition, index partition...
An object might contain one segment (table, index) or several segments (partitioned table, partitioned index), or might not. For example, a view (which is an object) does not contain actual data, it's only a logical definition, stored somewhere in the data dictionary. The same for a PL/SQL package, for example.
Best regards,
Emmanuel
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| Re: how is segment different from object? [message #577543 is a reply to message #577531] |
Mon, 18 February 2013 05:27 |
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Michel Cadot
Messages: 68641
Registered: March 2007
Location: Nanterre, France, http://...
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Senior Member
Account Moderator |
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Quote:A segment consists of actual data stored in the database
It is almost true (depending on what you name "data", if you mean anything then it is true).
A segment is a physical part of an object.
All this stuff is explain in details in Database Concepts everyone should read.
Regards
Michel
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