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- I Need Relation Algebra Database 1 (49.21 KiB) Viewed 39 times
I need Relation Algebra Database
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answerhappygod
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I need Relation Algebra Database
I need Relation Algebra
Database
a. Find the total number of people who owned cars that were involved in accidents in 1989. b. Find the number of accidents in which the cars belonging to "John Smith" were involved. c. Add a new accident to the database; assume any values for required attributes. d. Delete the Mazda belonging to "John Smith". e. Update the damage amount for the car with license number "AABB2000" in the accident with report number "AR2197" to $3000. person(driver-id, name, address) car(car-license, model, year) accident(report-number, date, location) owns(drive-id, car-license) participated(driver-id, car-license, report-number, damage amount) Figure 1. Insurance database
Database
a. Find the total number of people who owned cars that were involved in accidents in 1989. b. Find the number of accidents in which the cars belonging to "John Smith" were involved. c. Add a new accident to the database; assume any values for required attributes. d. Delete the Mazda belonging to "John Smith". e. Update the damage amount for the car with license number "AABB2000" in the accident with report number "AR2197" to $3000. person(driver-id, name, address) car(car-license, model, year) accident(report-number, date, location) owns(drive-id, car-license) participated(driver-id, car-license, report-number, damage amount) Figure 1. Insurance database