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Exam (elaborations)

ITSS 4351 Exam 1 || with Error-free Solutions.

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  • ITSS 4351
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  • ITSS 4351

data exploration techniques correct answers -Online Analytical Processing (OLAP) -MOLAP + MDBMS how data must be stored correct answers -data must be first aggregated -it must be summarized -must be able to extract data quickly without a massive table OLAP correct answers -aggregates infor...

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  • August 23, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • ITSS 4351
  • ITSS 4351
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ITSS 4351 Exam 1 || with Error-free Solutions.
data exploration techniques correct answers -Online Analytical Processing (OLAP)
-MOLAP + MDBMS

how data must be stored correct answers -data must be first aggregated
-it must be summarized
-must be able to extract data quickly without a massive table

OLAP correct answers -aggregates information from multiple systems
-stores in multi-dimensional format
-uses star schema and show flak schema concepts to store the data
-a technique can be used to slice and dice information for interrogation

why OLAP correct answers -data warehouse stores tactical information that answers for who,
what regarding past events
-ability to answer the what if and why questions
-enable decision making about future decisions
-transforms data into strategic information

OLAP dimensional techniques correct answers -star schema
-snow flak schema
-cube
mdbms

star schema correct answers A data modeling technique used to map multidimensional decision
support data into a relational database
-called its name because diagram has points radiating from center
-provides logical view for multidimensional data models

components of star schema correct answers - facts
- dimensions
- attributes
- attribute hierarchies

fact table correct answers facts of a particular business process or interests used for strategic
decisions
-numeric figure used for measurement or metric of business process

dimensions correct answers -provides additional perspectives to fact
-normally descriptive, textual values

attributes correct answers -used to provide descriptive characteristics about facts from dimension
table
-often used to search, filter, classify facts using dimension tables

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