Question
See the table below. Currently the audio-visual support department at a large university keeps track of its equipment and its servicing of that equipment using
See the table below. Currently the audio-visual support department at a large university keeps track of its equipment and its servicing of that equipment using an excel document such as the one below. Individual devices can be identified by their serial numbers. Each row of this table captures the service of a device by some technician. The audio-visual support department keeps track of the quantity of each device type that it has under management. The budget code of a university department uniquely identifies the department.
SerialNumber | 123445 | 123445 | 456112 |
PurchaseDate | 4/1/2011 | 4/1/2011 | 11/1/2012 |
PurchasePrice | $3,200 | $3,200 | $1,750 |
BrandName | Sony | Sony | Sony |
ModelNumber | PJ100 | PJ100 | PJ100 |
ProductDescription | 4K Projector | 4K Projector | 4K Projector |
QuantityUnderManagement | 13 | 13 | 13 |
BuildingCode | 298 | 298 | 301 |
BuildingAddress | 115 W Grace | 115 W Grace | 315 W Main St |
BuildingName | Harris Hall | Harris Hall | Queally Hall |
RoomNumber | 134 | 134 | 401 |
RoomType | Classroom | Classroom | Board Room |
DepartmentName | Mathematics | Mathematics | Business |
BudgetCode | 1001 | 1001 | 2100 |
DateOfInstallation | 5/13/2011 | 5/13/2011 | 5/1/2012 |
TechnicianID | 2375 | 2456 | 2375 |
TechnicianName | Emily Mann | Jon Pinsky | Emily Mann |
ServiceTicketID | 2002 | 1301 | 5401 |
ServiceDate | 4/15/2014 | 2/1/2015 | 12/13/2016 |
ServiceNotes | Changed Lamp | Changed Power Supply | I changed the defective lamp |
- Is the table above a relation? If not, what would need to be done for it to become a relation?
- Create a complete dependency diagram for the data below (note that you must show the primary key to be able to do this)
- If the table is not in 3rd normal form, normalize it to 3rd normal form by showing a series of relations in 3rd normal form. Show all referential integrity constrains; all relations must have names.
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