ScholarMatic: Explanation & Answer
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Please can you help me out on these questions.
1.The ____ key has some identifying information but does identify the record with accuracy.
a. Alien
B. secondary
c. primary
d. foreign
1.All the information about you in your university’s database is a_____
a. entity
b. instance
c. attribute
d. database
1.Which of the following is NOT a reason managing data is difficult.
a. Data are generated from multiple sources
b. Data are scattered throughout organizations
c. Data are subject to data rot
d. The amount of data is decreasing exponentially with time
- industry experts estimate that 80-90 percent of data in an organization is ____
a. part-structured
b. semi-structured
c. unstructured
d. structured
Databases___ inconsistency: this means____-
a. maximize: the same data are stored in multiple locations
b. minimize:various copies of the data do not agree
c. maximize:various copies of the data do not agree
d. minimize:the same data are stored in multiple locations
Performance Bicycle uses employee knowledge to help customers find products and relevant multimedia content about them. This is an example of ____knowledge in the KMS cycle.
a. storing
b. disseminating
c. refining
d. managing
Funtional dependencies are similar to ___keys
a. secondary
b. useful
c. foreign
d. prmary
The relational database model is based on the concept of ____ dimensional tables.
a. one
b. two
c. three
d. four
Suppose you are a salesperson. You take great pride in knowing each customers favorite places to eat their favorite meals. This is an example of ____
a. explicit information
b. explicit knowledge
c. tacit information
d. tacit knowledge
Suppose you work for XYZ Corporation. You know you can contribute 6% of your salary to a 401k and the company will match that 100% after 6 years of service beause it is in the employee handbook. This is an example of ___
a. explicit information
b. explicit knowledge
c. tacit knowledge
d. tacit information
____ are/is an example of open data from the Ebola fight in Africa.
a. Census data
b. Text messages
c. Voice calls
d. Social media
Performance Bicycle used a (n)____ system to increase its sales
a. OLTP
b. SQL
c. ETL
d. KMS
ScholarMatic: Explanation & Answer
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