Explain the term optimization and performance tuning
Explain the term optimization and performance tuning and its work in practical projects?
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Performance tuning and optimization of a query includes collecting statistics on link columns, ignoring cross product join, selection of suitable primary index (to ignore skewness within storage) and by using secondary index. Ignoring NUSI is advisable.
Specify the various advantages of the Lookup persistent cache?
What is Monopoly explain in brief?
Categorize the Hashing Functions based on the different methods through which the key value is found?
Assume when a session fails subsequent to loading of 10,000 records in to target. How can we load the records from 10001 the record when we run session next time?
Give a brief introduction of the term real time data-warehousing?
Specify the major components of the Designer Interface?
What does web mining mean
Explain the term DataStage and Informatica?
State the term Open switch business continuity software?
Describe briefly the difference between identifier and attributes?
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