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4. Write each query in relational algebra using the given relations Customer, Product and Order: (a) List all orders made in January (b) Find the

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4. Write each query in relational algebra using the given relations Customer, Product and Order: (a) List all orders made in January (b) Find the names and prices of all products made in Kent. (c) Retrieve the order numbers, months, customer IDs and quantities of all orders placed on the product 'hammer

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