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Decisions about Data

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Database Which of the following has (have) the broadest impact on an organization? Decisions about data.

Assessment Question 3.25

Your answer is correct.

Which of the following is not a reason why managing data is difficult over time?

New systems are developed.

The media the data are stored on becomes problematic.

New sources of data are created.

The amount of data increases exponentially.

All of these are reasons why managing data is difficult over time.

Assessment Question 3.26

Your answer is correct.

Not including alphabetic characters in a Social Security Number field is an example of _____.

Data isolation.

Data integrity.

Data consistency. …show more content…

When data are normalized, attributes in the table depend only on the _____.

secondary key

common attribute

primary key

common row

common record
Assessment Question 3.51

Your answer is correct.

The data in a data warehouse have which of the following characteristics?

They are organized by subject.

They are coded in different formats.

They are updated in real time.

They are typically retained for a defined, but limited, period of time.

They are organized in a hierarchical structure.
Assessment Question 3.52

Your answer is correct.

The data in a data warehouse:

are updated constantly in real time.

are updated in batch mode, approximately once per day.

are not updated.

are purged constantly as new data enter.

are available for MIS analysts, but not users.
Assessment Question 3.53

Your answer is correct.

The process of moving data from various sources into the data warehouse is called:

uploading.

extracting, transforming, and loading.

online transaction processing.

master data management.

online analytical processing.
Assessment Question 3.54

Your answer is correct.

Compared to data warehouses, data marts

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