Astronomy - General Astronomy
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On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red?
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A Complete write-up is provided in the attached file 'Why the Sky is blue'
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Motor vehicle maintenance center DMBS & Data Mining
A well designed database management system (DBMS) and data mining can help a lot to a motor vehicle maintenance center improve its services, and the following tables would be needed in such a database.
DBMS of a motor vehicle maintenance center:
Tables needed:
1. Vehicles
Vehicle_id
Manufacturer_code (FK)
Vehical_type_code(FK)
Date_of_manufacture
Capacity_tonnagge
Passenger_capacity
Max_speed
VIN,
Color,
Registeration_number,
Other_vehical_details
2. Automobiles
Automobile_id (FK)
Color_code
3. Ref_Manufacturers
Manufacturer_code
Manufacture_code
Country_made
Other_details
4. Vehical_Maintenance
Maintenance_id
Supplier_id(FK)
Vehical_id(FK)
Date_from
Date_to
Maintenance_notes
Part_id
Mechanic_id
status
5. Vehical_Ownership
Vehical_id(FK)
Date_owned_from
Owner_id(FK)
Date_owned_to
6. Vehical_Owners
Owner_id
Frist_name
Last_name
Home_phone
Cell_phone
Email_id
Address1
Address2
City
State
Zip
7. ...
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