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.
Write a brief note on the differences between a data warehouse and data mart?
Explain the Filter transformation?
Write a brief note on the difference between data and database administration?
State the steps for “this message could not delete” from the particular tables?
Write down a short note on the Global Temporary tables (GTT).
Name the areas where data structures are applied broadly?
Explain the operations that can be done with the Data Stage Director?
How can you save the Business Objects document that may be accessed by all the users in the workgroup mode?
Name the methods and types of Collision Resolution Techniques used in each of the type?
Specify the difference between the ER Modeling and Dimensional Modeling?
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