Insert (ignore duplicates) have a better performance than the merger?

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  Global > person > account > option
  
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  Two design
  
  attributes on the entity of the person :
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  attributes on the entity of the option :
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  The design will have a better performance with a large amount of rules, or it would make a difference at all?

  Hello!

  In our experience, just think about this kind of stuff if you were dealing with 100's or 1000 instances (usually through ODS). You have a very low number, the differences will be negligible, as you should (in general) go with the solution that is most similar to the material of origin or the understanding of the business user. Also, I guess that's an OWD project? Which may be even better, the inference is performed gradually when new data are added to the modules, rather than in a 'big bang' as ODS.

  It seems that the model 1 is the easiest to understand and explain. I wonder why you have the option at all entity, because it seems to be a relationship to one? If the person cannot have only a single amount of option 1, option 2 amount etc, and there's only ever going to be (up to) 5 options... is this assumption correct? If so, you can keep just like the attributes at the level of the person without the need for bodies. If there are other requirements of an instance of the option then, of course, use them, but given the information here, the option feature doesn't seem to be necessary. It would be the fastest of all :-)

  Whatever it is, that the number of instances is so low, you should have nothing to fear in terms of performance.

  I hope this helps! Write back if you have more info / questions.
  See you soon,.
  Ben

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• better option than a loop of validation?

  I am running 11.2.0
  
  I'm looking at the setting of a sql statement, and the issue was raised as to the max inserts by transactions in 11g, and if it is greater than 1000.
  I have not yet found a solid answer, but I thought that 10g was higher than 1000.
  
  In any case...
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  My scenario could meet as much as 20 000 inserts at the same time.
  
  Thank you.

  Willy_B wrote:

  I'm looking at the setting of a sql statement, and the issue was raised as to the max inserts by transactions in 11g, and if it is greater than 1000.

  There is no limit. So yes it is greater than 1,000

  What I did find is what is the best methodology by doing this?

  Insert directly in select

  My scenario could meet as much as 20 000 inserts at the same time.

  Here is an example on a database of development of the small insertion of 1 million lines in less than 10 seconds

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  Table created.
  
  SQL> set timing on
  SQL> insert into t
    2  select level, rpad('a', 50, 'a'), rpad('b', 100, 'b'), rpad('c', 200, 'c')
    3  from dual connect by level <= 1000000;
  
  1000000 rows created.
  
  Elapsed: 00:00:09.95
  

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