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What is a central location in which data is stored and managed?


A) Repository
B) Data warehouse
C) Data aggregation
D) Data broker

E) B) and C)
F) A) and D)

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Why do relational databases use primary keys and foreign keys?


A) To create an entity
B) To create physical relationships
C) To create logical relationships
D) To create an attribute

E) A) and B)
F) A) and C)

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What is fast data?


A) Processes and manages algorithms across many machines in a computing environment
B) A data value that is numerically distant from most of the other data points in a set of data
C) Occurs when the user goes into an emotional state of over-analysis (or over-thinking) a situation so that a decision or action is never taken,in effect paralyzing the outcome
D) The application of Big Data analytics to smaller data sets in near-real or real-time in order to solve a problem or create business value

E) A) and B)
F) A) and C)

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What is a technique for establishing a match,or balance,between the source data and the target data warehouse?


A) Data set
B) Dirty data
C) Data map
D) Data point

E) A) and D)
F) A) and C)

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What is affinity grouping?


A) Determines values for an unknown continuous variable behavior or estimated future value
B) Determines which things go together
C) Segments a heterogeneous population of more homogeneous subgroups
D) Assigns records to one of a predefined set of classes

E) All of the above
F) A) and B)

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Web analytics analyzes unstructured data associated with websites to identify consumer behavior and website navigation.

A) True
B) False

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Within the data warehouse model,the external databases could include competitor information,industry information and stock market analysis.

A) True
B) False

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What analyzes unstructured data to find trends and patterns in words and sentences?


A) Structured data
B) Unstructured data
C) Text analytics
D) Web analytics

E) A) and D)
F) C) and D)

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Social media analytics analyzes text flowing across the Internet,including unstructured text from blogs and messages.

A) True
B) False

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What assigns records to one of a predefined set of classes?


A) Classification
B) Estimation
C) Affinity grouping
D) Clustering

E) C) and D)
F) B) and C)

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A foreign key uniquely identifies a given record in a table.

A) True
B) False

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What is prediction?


A) A statement about what will happen or might happen in the future,for example,predicting future sales or employee turnover
B) A statistical process that finds the way to make a design,system,or decision as effective as possible,for example,finding the values of controllable variables that determine maximal productivity or minimal waste
C) Predictions based on time-series information
D) A statistical process for estimating the relationships among variables

E) None of the above
F) B) and C)

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Data stewardship is the management and oversight of an organization's data assets to help provide business users with high-quality data that is easily accessible in a consistent manner.

A) True
B) False

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What are the rules that help ensure the quality of information?


A) Information integrity
B) Integrity constraints
C) Relational integrity constraints
D) Business-critical integrity constraints

E) A) and C)
F) A) and B)

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What is source data?


A) Identifies the primary location where data is collected
B) A storage repository that holds a vast amount of raw data in its original format until the business needs it
C) A technique for establishing a match, or balance, between the source data and the target data warehouse
D) An approach to business governance that values decisions that can be backed up with verifiable data
Source data identifies the primary location where data is collected.

E) A) and B)
F) A) and C)

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Which of the following occurs during data cleansing?


A) Clean data marts
B) Clean redundant customer data
C) Clean accurate data
D) Clean correct data

E) A) and D)
F) A) and B)

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How would the airline industry use business intelligence?


A) Analyze popular vacation locations with current flight listings
B) Understand customer credit card usage and nonpayment rates
C) Compare the demographics of patients with critical illnesses
D) Predict claim amounts and medical coverage costs

E) B) and D)
F) C) and D)

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Structured query language compiles all of the metadata about the data elements in the data model.

A) True
B) False

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A foreign key is a field (or group of fields)that uniquely identifies a given entity in a table.

A) True
B) False

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Relational databases offer many advantages over using a text document or a spreadsheet,which include decreased flexibility and decreased scalability and performance.

A) True
B) False

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