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Draw an ER diagram for the following situation (State any assumptions you believe you have to make in order to develop a complete diagram): Stillwater antiques buys and sells one-of-a-kind antiques of all kinds (e.g., furniture, jewelry, china, and clothing). Each item is uniquely identified by an item number and is also characterized by a description, asking price, condition, and open-ended comments. Stillwater works with many different individuals, called clients, who sell items to and buy items from a store. Some clients only sell items to Stillwater, some only buy items, and others both buy and sell. A client is identified by a client number and is also described by a client name and address. When Stillwater sells and item in stock to a client, the owners want to record the commission paid, the actual selling price, sales tax( tax of zero identifies a tax exempt sale (is this OK?!), and date sold. When Stillwater buys an item from a client, the owners want to record the purchase cost, date purchased, and condition at time of purchase.
Create an object relationship diagram that provides an overview of the system, including how textbooks are selected by instructors, approved by a department head, and sold to students by the bookstore.
Draw an entity-relationship diagram for the following situation: Many students play many different sports. One person, called the head coach, assumes the role of coaching all these sports.
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Design a flowchart to depict each situation. An individual from a wholesale company needs to prepare five copies of sales.
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Create a state transition diagram that describes typical patient states and how they change based on specific actions and events.
Compute the open-circuit voltage and short-circuit current of combination of cells.
Convert table to 3NF. Represent your answer in DBDL. Give table name and fields. Underline primary key. Sketch entity-relationship diagram showing all relationships.
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