The following attributes form a relation that includes information about individual computers, their vendors, software packages 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 UserAuthorizarion 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: ComputerSerialNbr, Vend orlD, VendorName, VendorPhone, VendorSupportlD, VendorSupportName, VendorSupportExtension, SoftwarelD, SoftwareName, Sof twareVendor, SoftwareLicenceExpi res, SoftwareLicencePrice, UserlD, UserName, UserAuthorizationStarts, UserAuthori zationEnds, UserAuthorizationPassword, PurchasePrice

1- ERD 2 -Relation