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A Railway company uses machines to …

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A Railway company uses machines to sell tickets. The machine details and daily sales information are recorded in two tables: Table Name: Machine Table Name: Sales The primary key of the table Machine is Machine_ID. Records in the table Sales are uniquely identified by the fields Machine_ID and Date. (a) Create the tables Machine and Sales. (b) Write a query to find the number of ticket machines in each station. (c) Write a query to find the total ticket income of the station “New Delhi” of each day. (d) Write a query to find the total number of tickets sold by the machine (Machine_ID = 122) till date.

Posted by Parveen Singh 1 year, 2 months ago

CBSE > Class 12 > Computer Science

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