Exam 6: Database Design: Relationships

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Which of the following Access features provides a drop-down list of values for a field?

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B

An E-R diagram uses diamonds to illustrate relationships between tables.

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False

During which process do you typically create an entity-relationship (E-R) diagram?

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C

How might you resolve an inappropriate Cartesian join?

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Explain the difference between information-level design and physical-level design.

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The E-R model (ERM) represents entities, attributes, and _____.

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What is the purpose of an index?

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What type of relationship do two tables have when their primary keys match?

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A query includes the DeptID and DeptName fields from the Departments table and the EmployeeLast field from the Employees table. Both tables are shown below. What must you change before you can reassign the DeptID field value for a particular employee in the query results? Departments (DeptID, DeptName) Employees (EmpID, EmployeeFirst, EmployeeLast, DeptID)

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When the Unique property for an index is set to Yes in Access, every value in the index must be unique.

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In Database Design Language (DBDL), which items do you underline?

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Which fields should you index in a table?

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Describe the different types of keys illustrated in Database Design Language (DBDL) and how they are notated.

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A user view of data is _____.

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A(n) _____ represents a field or combination of fields that may not be unique, but is commonly used for retrieval and thus should be indexed.

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Information-level design is independent of any particular DBMS that the organization will ultimately use.

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Which properties do you set to display a list of possible values that are helpful when you enter or update data in a foreign key field?

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ProductType is a foreign key field in the Orders table and is constrained to a list of valid entries stored in the ProductTypes table. What problem does this design prevent?

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Which of the following is not true about one-to-many relationships?

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Which of the following Access features does not demonstrate the power of one-to-many relationships?

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