Exam 5: Database Design

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The first step of database design is to define a table for each ________.

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As far as Microsoft Access is concerned,there are no 1:N relationships.

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The ideal primary key is short,numeric,and fixed.

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Recursive relationships can be represented in the relational model using the same techniques that are used for binary relationships.

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Which of the following is not true about surrogate keys?

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To represent a 1:N relationship in the relational model,the key of the entity on the one side of the relationship is placed as a foreign key in the entity on the many side of the relationship.

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By default,when Microsoft Access creates a relationship between two tables it creates a(n)________ relationship.

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The first step in representing entities using the relational model is to determine which identifier will be used as the key.

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The ideal primary key is ________.

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Explain the representation of a one-to-many strong entity relationship in a relational database design.

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Given the tables TABLE_A (Attribute1, Attribute2, Attribute3) TABLE_B (Attribute4, Attribute5, Attribute6) As shown in the figure below,which of the following would display the correct placement of foreign keys in the relational model? Given the tables  TABLE_A (<u>Attribute1</u>, Attribute2, Attribute3)  TABLE_B (<u>Attribute4</u>, Attribute5, Attribute6)  As shown in the figure below,which of the following would display the correct placement of foreign keys in the relational model?

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Which of the following would be a reason to denormalize a relation?

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To represent a 1:N relationship in the relational model,the key of either entity may be placed as a foreign key in the other entity.

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Relationships that are 1:1 do not require referential integrity constraints.

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Microsoft Access uses the same pure N:M relationships that occur in data modeling.

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Relations should always be normalized to the highest degree possible.

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Which of the following is not true of recursive relationships?

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Once a table has been defined,it should be examined according to ________ criteria.

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Given the tables PRODUCT (ProductID, Description, Cost) SUPPLIER (SupplierID, ContactName, PhoneNumber) As shown in the figure below,which of the following would represent the correct placement of foreign keys? Given the tables PRODUCT (<u>ProductID</u>, Description, Cost) SUPPLIER (<u>SupplierID</u>, ContactName, PhoneNumber) As shown in the figure below,which of the following would represent the correct placement of foreign keys?

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How are 1:1,1:N and N:M relationships handled in Microsoft Access?

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