Reference no: EM131738731

Question: The following attributes form a relation that includes informa- tion about individual computers, their vendors, software pack- ages running on the computers, computer users, and user authorizations. Users are authorized to use a specific software package on a specific computer during a specific timeframe (characterized with attributes UserAuthorization Starts and UserAuthorizationEnds and secured with UserAuthorizationPassword). Software is licensed to be used on specific computers (potentially multiple software packages at the same time) until an expiration time (SoftwareLicenceExpires) at a specific price. Computers are sold by vendors, and each vendor has a support person with an ID, name, and phone extension. Each individual computer has a specific purchase price. The attributes are as follows:

Computer SerialNbr, VendorID, VendorName, VendorPhone, VendorSupportID, VendorSupportName, VendorSupportExtension, SoftwareID, SoftwareName, SoftwareVendor, SoftwareLicenceExpires, SoftwareLicencePrice, UserID, UserName, UserAuthorizationStarts,

1. UserAuthorizationEnds, UserAuthorizationPassword, PurchasePrice Based on this information,

2. Identify the functional dependencies between the attributes.

3. Identify the reasons why this relation is not in 3NF. Present the attributes organized so that the resulting relations are in 3NF.