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please solve as soon as possible Please answer to the questions below: 2 (a) What data model do we use for storing data in various

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please solve as soon as possible

Please answer to the questions below: 2 (a) What data model do we use for storing data in various tables? (b) In the above mentioned model, what do the columns and rows represent? (c) Discuss any three relational algebra operations with relevant examples

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