Mis 380 SDSU midterm Questions and Correct Answers/ Latest Update / Already Graded

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Mis 380 SDSU midterm Questions and
Correct Answers/ Latest Update / Already
Graded
Data

Ans: evidence; information gathered from observations Raw


information

Ans: Data converted into a meaningful and useful context


Metadata

Ans: Data that describe the properties of other data are:


Entity

Ans: A person, place, thing, transaction, or event about which
information is stored


database system advantages

Ans: better data quality, program data independence, reduced
maintenance



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data warehouse derives its data from

Ans: various operational data sources


disadvantages of file processing

Ans: high maintenance, stored in individual files


attributes

Ans: A person's name, birthday, and social security number are
all examples of:


composite attribute

Ans: An attribute that can be further subdivided to yield
additional attributes. For example, a phone number such as
615-898-2368 may be divided into an area code (615), an
exchange number (898), and a four-digit code (2368). Compare
to simple attribute.


E-R Model

Ans: used to construct a conceptual model.


derived attribute

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