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When is a transaction rolled back?
Any changes that the aborted transaction made to the database must be uncompleted. While the changes caused by an aborted transaction have been undone, then the transaction has been rolled back.
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What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
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Ask question #Minim 100 words accepted#what is recovery management component in database management system and how it is useful
What is conceptual model ? A conceptual model is a independent of both hardware and software.
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
Draw an ER diagram for company''s database schema
how to find entities
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