Explain contexts
Explain the term Contexts?
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A context refers to the rule which determines which of two paths may be chosen when more than one path is possible within the database from one table to the other one. It helps in resolving loops developed by the several joins in the universe tables.
Specify the difference between the ER Modeling and Dimensional Modeling?
Describe how we can add a NOT NULL column to a table?
State the different advantages of the data warehousing?
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Explain in brief the term data warehouse.
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