Question: Consider the following relation: laptops : Model H Brand where laptops = { legion5 H lenovo, macbookair apple, xps 15 dell, spectre hp, xps 13

Consider the following relation: laptops : Model H Brand where laptops

Consider the following relation: laptops : Model H Brand where laptops = { legion5 H lenovo, macbookair apple, xps 15 dell, spectre hp, xps 13 dell, swift3 + acer, macbookpro Happle, dragonfly + hp, envyz360 hp } 1. What is the domain and the range of the relation? 2. What is the result of the expression {zps15, xps 13, swift3, envyx360} = laptops What is the meaning of operator , and where would you deploy such operator in the context of a database management system? Consider the following relation: laptops : Model H Brand where laptops = { legion5 H lenovo, macbookair apple, xps 15 dell, spectre hp, xps 13 dell, swift3 + acer, macbookpro Happle, dragonfly + hp, envyz360 hp } 1. What is the domain and the range of the relation? 2. What is the result of the expression {zps15, xps 13, swift3, envyx360} = laptops What is the meaning of operator , and where would you deploy such operator in the context of a database management system

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