October 13, 2023
Question 268 The natural join is equal to : A Combination of Union and Cartesian product B Combination of selection and Cartesian product C Combination of […]
October 13, 2023
Question 878 Consider the following schema : Sailors(sid,sname,rating,age) Boats(bid,bname, colour) Reserves(sid,bid,day) Two boats can have the same name but the colour differentiates them. The two relations […]
October 13, 2023
Question 49 Consider a bank database with only one relation transaction (transno, acctno, date, amount) The amount attribute value is positive for deposits and negative for […]
October 14, 2023
Question 21 A relation Empdtl is defined with attributes empcode (unique), name, street, city, state and pincode. For any pincode, there is only one city and […]
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