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Database design | Computer Science homework help DATABASE DESIGN Quiz     Part 1: Contrast the items in the following sets of terms:   a)       Object; class; instance; entity relationship diagram (ERD) entity     b)       Property; method; attribute   c)       State; behavior   d)       Super class; sub class   e)       Concrete class; abstract class f)       Method; message   g)       Encapsulation; inheritance; polymorphism   h)       Static binding; dynamic binding   2. How is the object approach different from the data and process approaches to systems development? And how can the object approach improve the systems development process?   3. Describe the main building blocks for the sequence diagram and how they are represented on the model. a)      Header Elements of Sequence diagrams b)      Body Elements of Sequence diagrams 4. Describe the steps used to create a sequence diagram.       Part 2: Draw the associations that are described by the following business rules. Include the multiplicities for each relationship.   1.      A patient must be assigned to only one doctor and a doctor can have one or many patients.             2.    An employee has one phone extension, and a unique phone extension is assigned to an employee. 3.  A movie theater at least one movie, and a movie can be shown at up to four other movie theaters around town. 4.   A movie either has one star, two co-stars, or more then ten people starring together. A star must be in at least one movie.                            


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