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ISA 245 Final Exam With 100% Correct And Verified Answers
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ISA 245 Final Exam With 100% Correct And Verified Answers
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ISA 245 Final Exam With 100% CorrectAnd Verified Answers
T/F- While creating a 'well-formed' database, functional
dependencies are identified before normalizing the tables -
Correct Answer-True
A relational database contains three entities - Correct
Answer-Customer, Order, and Product. The Customer is in
1NF, the Order is in 2NF, and the Product is in 3NF. What is
the normal form of the entire database?: 1NF
T/F- An entity in third normal form cannot have any
duplicate data - Correct Answer-False
T/F- Suppose the following dependency holds, (EmpID,
JobTitle) → Income, then, JobTitle alone can uniquely
determine Income - Correct Answer-False
T/F- Data Manipulation Language (DML) is used for
processing the data in a database using commands such as
INSERT, UPDATE, and DELETE - Correct Answer-True
Which data format can be used for storing values with two
decimal places in the PRICE attribute? - Correct Answer-
NUMBER(6,2)
T/F- Following command will show all the records of the
table ARTIST- DESCRIBE ARTIST - Correct Answer-
False
Vendarsol
,T/F- A CUSTOMER table contains a GENDER attribute
which can take only two values 'M' and 'F'. GENDER is the
ideal attribute for indexing - Correct Answer-False
T/F- User Tom gives the following privilege to user Jerry.
User Jerry is now able to update the attribute ProductPrice
in the PRODUCT table- GRANT SELECT ON
TOM.PRODUCT TO JERRY - Correct Answer-False
Why are operational data not useful for decision support
analysis? - Correct Answer-Operational data typically does
not contain historical data, Operational data is mostly
fragmented and inconsistent, and operational data does not
provide enterprise-wide view
T/F- The term ETL in data warehouse stands for Evaluate,
Track, and Leverage - Correct Answer-False
Which of the following is not an example of measure of fact
table? - Correct Answer-Patient Address
T/F- Snowflake schema is created when dimensions have
attribute hierarchy - Correct Answer-True
T/F- If you drill-down Product dimension from Department
to Category to Sub-Category to Brand then then you are
moving from coarsely granular data to finely granular data -
Correct Answer-True
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, MU wants to track the number of enrollments per course
number, per section for five years. MU created an OLAP
data cube with a measure and three dimensions. Which of
the following could be a side in the OLAP
cube? - Correct Answer-Years
T/F- Dimension models such as OLAP typically
are highly normalized - Correct Answer-False
T/F- Pivot operation of OLAP provides
alternate presentation of data by rotating the
OLAP cube - Correct Answer-True
Content - Correct Answer-
How to obtain "well-structured" data -
Correct Answer-Data redundancy causes data
anomalies. These are identified by functional
dependencies, which are removed by
normalization, and this leads to "well-
structured" data
Primary Key - Correct Answer-In the
relational model, an identifier composed of
one or more attributes that uniquely
identifies a row.
Key - Correct Answer-One or more attributes
that determine other attributes
Vendarsol
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