Question $2$: Use the same Inventory Database described above $($in Question $1)$ and answer the

following questions:

After executing the following SQL statement using SQL Server $2019,$ the following execution

plan is displayed. In this plan, the Select statement is executed with a Clustered Index Scan.

Briefly describe the process executed by the index scan and suggest how to improve the query

execution efficiency.

SELECT cust$\_$name, city, grade FROM Customers WHERE city$=$'London'