Exam 11: Databases

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What does the JOIN command allow you to do in SQL?

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____ allows decision makers to look for relationships between multiple data dimensions.

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Queries within an unsorted database are slow because the only algorithm for searching an unsorted table requires a sequential look at each record.

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Critical Thinking questions (Multiple Choice) Which of the following is a true statement?

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What is the purpose of tracking who makes changes in a database?

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  Relationships between record types can be graphically depicted, as shown in the figure above, using a(n) ____. Relationships between record types can be graphically depicted, as shown in the figure above, using a(n) ____.

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Which of the following designates records that meet one of a set of two criteria, or both?

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A ____ is a collection of binary data that is stored in a single field of a database.

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Identify the letter of the choice that best matches the phrase or definition.
Premises:
The smallest unit of meaningful information
Responses:
database audit
data type
computed
Correct Answer:
Verified
Premises:
Responses:
The smallest unit of meaningful information
database audit
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A fixed-length field contains a predetermined number of ____.

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Identify the letter of the choice that best matches the phrase or definition.
Premises:
Procedure that monitors and records user activity within a database
Responses:
flat file
variable-length field
integer
Correct Answer:
Verified
Premises:
Responses:
Procedure that monitors and records user activity within a database
flat file
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Case 3 There is the database designer and the people who enter the data. Sometimes this is the same person, but in Kate's large banking firm, the actual database entries are not made by the people who designed the database. A data entry operator might enter a telephone number as 555-555-7777, (555) 555-7777, or 1-555-555-7777. If multiple data entry operators enter telephone numbers in different reports, it becomes difficult to produce nicely formatted reports or locate a particular telephone number. To prevent inconsistent formatting, a database designer can specify a ____, so that now if someone attempts to enter data in the wrong format, the database rejects that entry.

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Data ____ refers to the process of analyzing information in databases to discover previously unknown and potentially useful information.

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Case 4 The SQL query language provides a collection of special command words called SQL keywords. With these keywords, SQL can be used to specify the action that should be carried out in the database. Working with the WebMusic company database, which command is selected for using the data from two tables as in: SELECT FROM CompactDisks ____ Tracks ON CompactDisks.ItemNumber = Tracks.ItemNumber?

(Multiple Choice)
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Identify the letter of the choice that best matches the phrase or definition.
Premises:
Refers to the detailed specifications for a command
Responses:
integer
variable-length field
flat file
Correct Answer:
Verified
Premises:
Responses:
Refers to the detailed specifications for a command
integer
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A record that contains data is referred to as a record ____.

(Multiple Choice)
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Identify the letter of the choice that best matches the phrase or definition.
Premises:
Efficiently designed databases use this type of field whenever possible
Responses:
parameter
object-relational database
database audit
Correct Answer:
Verified
Premises:
Responses:
Efficiently designed databases use this type of field whenever possible
parameter
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The ____ database model uses a mesh-like structure to offer the additional capacity to define many-to-many relationships.

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In a case sensitive database, uppercase letters are not equivalent to their lowercase counterparts.

(True/False)
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A(n) ____________________ limits access to systems such as computer databases.

(Short Answer)
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