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Data warehousing interview questions
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data warehousing testing
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ETL Testing faq
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data warehousing testing
etl testing
informatica testing
teradata testing
abinitio testing
What is Data Cardinality?
What is Data Cardinality?
Cardinality is the term used in database relations to
denote the occurrences of data on either side of the
relation.
What are Critical Success Factors?
What are Critical Success Factors?
Key areas of activity in which favorable results are
necessary for a company to obtain its goal.
There are four basic types of CSFs which are:
Industry CSFs
Strategy CSFs
Environmental CSFs
Temporal CSFs
What is data cube technology used for?
What is data cube technology used for?
Data cubes are commonly used for easy interpretation
of data. It is used to represent data along with
dimensions as some measures of business needs. Each dimension of the cube represents some attribute of the database. E.g profit per day, month or year.
What is data cleaning?
What is data cleaning?
Data cleaning is also known as data scrubbing.
Data cleaning is a process which ensures the set of data
is correct and accurate. Data accuracy and consistency,
data integration is checked during data cleaning. Data cleaning can be applied for a set of records or multiple sets of data which need to be merged.
Explain how to mine an OLAP cube?
Explain how to mine an OLAP cube.
An extension of data mining can be used for slicing the
data the source cube in discovered data mining.
The case table is dimensioned at the time of mining a
cube.
What is MODEL in Data mining world?
What is MODEL in Data mining world?
Models in Data mining help the different algorithms in
decision making or pattern matching,which is the second stage of data mining.