Explain the three types of anomalies associated with database tables that have not been normalized
The update anomaly is the result of data redundancy. If a data element is stored in more than one place, it must be updated in all places. If this does not happen, the data are inconsistent.
The insertion anomaly occurs when too much data is stored together–when vendor information is only stored with specific inventory items. Until items are purchased from a given vendor, the vendor cannot be added to the database.
The deletion anomaly is the opposite of the insertion anomaly–if a vendor supplies only one item, and the firm discontinues that item, all information on the vendor is lost when vendor information is only stored with specific inventory items.
You might also like to view...
The most difficult decisions about which opinion to issue are generally centered around decisions based on the materiality level and pervasiveness of GAAP violations, the significance of scope limitations, and the likelihood of the entity being a going concern
a. True b. False Indicate whether the statement is true or false
Jean is playing a computer game on a bad disk that melts in her drive, starting a fire that injures her hands. Jean files a suit against K-Tech, Inc., the game's manufacturer. K-Tech is held liable under the doctrine of strict liability. A significant application of this doctrine is in the area of
A. cyber crime. B. negligence. C. product liability. D. res ipsa loquitur.
Marketing and new product experts believe that most of the small business failures could have been avoided by following the new product development (NPD) process.
Answer the following statement true (T) or false (F)
The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They
decided to offer a $1.00-off coupon in a newspaper advertisement. What markdown percentage does this coupon represent? (Round to the nearest tenth of a percent)