Please explain me all types of Data models. Also give me the details if each model can have other name.for example:schematic data model is also known as conceptual data model and entity relation data model.

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How to define a data field as not null?

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What is forall Statement ?

2 Answers   Thermotech,

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Explain the concept of the DUAL table.

2 Answers  

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what is the difference between restoring and recovering?

0 Answers   MCN Solutions,

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How to apply filtering criteria at group level in oracle?

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What happens to the current transaction if the session is ended?

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Can we create trigger on view in oracle?

1 Answers  

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I have created one package with out procedures in package specification and in package body i have used 2 procedures. is it compile????

1 Answers  

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how to store only time in a data base table

2 Answers  

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What is the CAP theorem?

1 Answers  

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I have a parent program and a child program. I want to write a statement in Exception Block of the parent program so that when the statement in the exception block is executed, the control goes to the next statement in the parent block bypassing the child block.How do i do that?

0 Answers   Mastek,

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