Business Communication by Lesikar, Flatley and Rentz.
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A biochemical engineer has determined in lab that the optimal productivity of a valuable antibiotic is achieved when the carbon nutrient, in this case molasses, is metered in to the fermente…Full description
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The Relaxation and Stress Reduction Workbook broke new ground when it was first published in 1980, detailing easy, step-by-step techniques for calming the body and mind in an increasingly overstimu...
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Exercises
1 1. Conside Considerr an online online auction auction databas database e system system in which which membe members rs (buyers (buyers and and sellers) participate in the sale of items. The data requirements for this system are summarized as follows: • The online site has members who are identified by a unique member id and are described by an email address, their name, a password, their home address, and a phone number. • member may be a buyer or a seller. buyer has a shippin! address recorded in the database. seller has a ban" account number and routin! number recorded in the database. • #tems are placed by a seller for sale and are identified by a unique item number assi!ned by the system. #tems are also described by an item title, an item description, a startin! bid price, biddin! increment, the start date of the auction, and the end date of the auction. • #tems #tems are also also cate!o cate!oriz rized ed based based on a fi$ed fi$ed classi classific ficati ation on hierar hierarchy chy (for e$ample a modem may be classified as %C&'T*+%+-+*%'&-*'). • /uyers ma"e bids for items they are interested in. biddin! price and time of bid placement is recorded. The person at the end of the auct auctio ionn with with the the hi!h hi!hes estt bid bid pr pric ice e is decl declar ared ed the the winn winner er and and a transaction between the buyer and the seller may proceed soon after. • /uyers and sellers may place feedbac" ratin!s on the purchase or sale of an item. The feedbac" contains a ratin! between 1 and 10 and a comment. ote that the ratin!s are placed on a completed transaction by the buyer or seller of the item in the transaction. -esi!n an *nhanced *ntity2+elationship dia!ram for the auction database. fter That 'ap your **+ into a +elational 3chema 'odel
