Exam 6: Database Design 2: Design Method

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A natural key is also called a(n)____ key.​

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​There are two types of primary keys that you can use in your database design.

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Convert the following table to first normal form:​ Branch (BranchNum,BranchName,(BookCode,Title,OnHand))

(Multiple Choice)
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It is through foreign keys that you can create relationships among tables and enforce certain types of ____________________ constraints in a database.​

(Short Answer)
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A design that supports all user views is called a constructive design.​

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A column that you create for an entity to serve solely as the primary key and that is visible to users is called a(n)____.​

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The use of an "m" and an "n" in an E-R diagram indicates a many-to-many relationship.​

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On an E-R diagram,the number closest to the rectangle represents ____ cardinality.​

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The second step in creating a user view is to represent the user view as a collection of tables.​

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When you use an E-R diagram to represent a database,it visually illustrates all the information listed in the DBDL.​

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List the types of information that must be included on a survey form in order for it to be considered valuable to the design process.​

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A weak entity corresponds to the term ____________________.​

(Short Answer)
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If each employee works in a single department and each department has only one employee,the relationship between employees and departments is ____.​

(Multiple Choice)
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On an E-R diagram,the number closest to the relationship represents ____ cardinality.​

(Multiple Choice)
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In DBDL,you represent a table by listing all columns and then underlining the primary key.​

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The basic relationships among entities are: one-to-many,many-to-many,and one-to-one.​

(True/False)
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Describe the different types of primary keys.​

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You can recognize entity subtypes by the fact the primary key is also a(n)____________________.​

(Short Answer)
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The crucial issue in making the determination between a single many-to-many-to-many relationship and two (or three)many-to-many relationships is the ____.​

(Multiple Choice)
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For each table,you must identify the primary key and any alternate keys,secondary keys,and ____________________ keys.​

(Short Answer)
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