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Exam 5: Data and Knowledge Management

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Question 31

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It is important for applications and data to be dependent on each other.

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Question 32

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Increasing amounts of external data need to be considered in making organizational decisions.

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Question 33

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Big Data is easy to define.

The data dictionary stores definitions of data elements, characteristics that use the data elements, physical representation of the data elements, data ownership, and security.

Describe entity-relationship modeling. Section reference 1: The Database Approach

_____ is a process that helps organizations identify, select, organize, disseminate, transfer, and apply expertise that are part of the organization's memory and typically reside inside the organization in an unstructured manner.

The amount of data produced worldwide is increasing by ___% each year.

A(n) _____ is a logical grouping of related fields.

The secondary key is a field that identifies a record with complete uniqueness.

Which of the following is not a source for external data?

Why are many organizations turning to NoSQL databases to manage big data?

The most important benefit of knowledge management systems is:

Refer to IT's About Business 5.2: Storing data in proprietary formats does not pose a great challenge in consolidating and systematically categorizing data from multiple sources.

For the following entity-relationship diagram, what could the primary key be in the Grade entity?

Differentiate between master data and transaction data. Section reference 1: Data Governance

Refer to Closing Case - Can Organizations Have Too Much Data? The primary reason why organizations would want to maintain multiple copies of the same data are the regulations and laws.

_____ is a method for analyzing and reducing a relational database to its most streamlined form.

When you start a job, you watch what other employees are doing and ask them to explain why they do it in a particular way. They are sharing their tacit knowledge.

Which of the following are requirements under the Sarbanes-Oxley act? (check all that apply) a) Public companies must evaluate and disclose the effectiveness of their internal financial controls. b) Companies must hire independent auditors to verify the disclosures. c) IT employees are held personally responsible for the release and validity of all filings. d) Company officers can be held personally liable if the company lacks satisfactory data management policies. e) Companies will not be held liable if a security breach occurs.

Identify and explain the advantages of the four characteristics of data warehouses. Section reference 1: data Warehousing