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Q9. Write an SQL statement to answer the question: 'Are there any bookings not driven by qualified drivers, i.e. driver tvpe not matching vehicle type?' The resulting table is as follows. BOOK_ID VEH_DESC VYEH_TYPE DRIVER_NAME DRIVER_TYPE BOOK_DATE BOOK_TIME BOOK_HRS 1 8728 |Volvo FM12 |Medium Truck Vincent Ma LGV |2022/3/4 14:30 2 Q10. In view of the possible problem as per Q9, suggest a way to prevent such booking. You may consider running query to highlight this or changing the data model to prevent so. Explain your suggestion.

Q9. Write an SQL statement to answer the question: 'Are there any bookings not driven by qualified drivers, i.e. driver tvpe not matching vehicle type?' The resulting table is as follows. BOOK_ID VEH_DESC VYEH_TYPE DRIVER_NAME DRIVER_TYPE BOOK_DATE BOOK_TIME BOOK_HRS 1 8728 |Volvo FM12 |Medium Truck Vincent Ma LGV |2022/3/4 14:30 2 Q10. In view of the possible problem as per Q9, suggest a way to prevent such booking. You may consider running query to highlight this or changing the data model to prevent so. Explain your suggestion.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Q9. Write an SQL statement to answer the question: 'Are there any bookings not driven by qualified drivers, i.e. driver tvpe not matching vehicle type?’ The resulting table is as follows. BOOK ID VEH_DESC YEH_TYPE 1 8728 Volvo FM12 Medium Truck Vincent Ma LGV DRIVER_MAME DRIVER_TYPE BOOK_DATE BOOK_TIME BOOK_HRS |2022/3/4 14:30 2 Q10. In view of the possible problem as per Q9, suggest a way to prevent such booking. You may consider running query to highlight this or changing the data model to prevent so. Explain your suggestion.
Transcribed Image Text:Q9. Write an SQL statement to answer the question: 'Are there any bookings not driven by qualified drivers, i.e. driver tvpe not matching vehicle type?’ The resulting table is as follows. BOOK ID VEH_DESC YEH_TYPE 1 8728 Volvo FM12 Medium Truck Vincent Ma LGV DRIVER_MAME DRIVER_TYPE BOOK_DATE BOOK_TIME BOOK_HRS |2022/3/4 14:30 2 Q10. In view of the possible problem as per Q9, suggest a way to prevent such booking. You may consider running query to highlight this or changing the data model to prevent so. Explain your suggestion.
DRIVER Primary Key: DRIVER_ID DRIVER_ID DRIVER_NAME DRIVER_TYPE 1 CL818 2 SW572 3 PT232 | Charles Leung Sara Wong Peter Tang Emily Cheung Vincent Ma LGV Medium Truck Medium Truck 4 EC625 5 VM888 6 DW365 Heavy Truck LGV David Wu LGV VEHICLE Primary Key: VEH_ID VEH_DESC |Toyota Hiace Toyota Hiace Volvo FM12 VEH_ID VEH_TYPE 1 LGV859 2 LGV325 3 FM1208 4 FH1601 LGV LGV Medium Truck Volvo FH16 Heavy Truck ..... BOOKING Primary Key: BOOK_ID Foreign Keys: BOOK_VEH, BOOK_DRIVER вооK ID BOOK_VEH BOOK_DRIVER 1 B723 2 B724 3 B725 4 B726 5 B727 6 B728 7 B729 BOOK_DATE BOOK_TIME BOOK_HRS LGV325 VM888 ЕС625 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 10:15 2.5 FH1601 10:30 LGV859 DW365 11:00 FM1208 PT232 11:00 LGV325 CL818 14:00 1.5 FM1208 VM888 14:30 LGV859 DW365 14:45 1.5 S23 5
Transcribed Image Text:DRIVER Primary Key: DRIVER_ID DRIVER_ID DRIVER_NAME DRIVER_TYPE 1 CL818 2 SW572 3 PT232 | Charles Leung Sara Wong Peter Tang Emily Cheung Vincent Ma LGV Medium Truck Medium Truck 4 EC625 5 VM888 6 DW365 Heavy Truck LGV David Wu LGV VEHICLE Primary Key: VEH_ID VEH_DESC |Toyota Hiace Toyota Hiace Volvo FM12 VEH_ID VEH_TYPE 1 LGV859 2 LGV325 3 FM1208 4 FH1601 LGV LGV Medium Truck Volvo FH16 Heavy Truck ..... BOOKING Primary Key: BOOK_ID Foreign Keys: BOOK_VEH, BOOK_DRIVER вооK ID BOOK_VEH BOOK_DRIVER 1 B723 2 B724 3 B725 4 B726 5 B727 6 B728 7 B729 BOOK_DATE BOOK_TIME BOOK_HRS LGV325 VM888 ЕС625 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 2022/3/4 10:15 2.5 FH1601 10:30 LGV859 DW365 11:00 FM1208 PT232 11:00 LGV325 CL818 14:00 1.5 FM1208 VM888 14:30 LGV859 DW365 14:45 1.5 S23 5
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