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 down a short note on the term concurrency transparency?
What is the main reason that database is considered as "self-describing"?
Write a short on the six database functions which occur during the systems development life cycle?
Define the market structures and price output determination in words of Clark and Clark.
Consider a MOVIE database in which data is recorded about the movie industry. The data requirements are summarized as follows: ¦ Each movie is identified by title and year of release. Each movie has a length in minutes. Each has a production company, and each is classified under one or more genre
Write down a short note on the term domain constraints?
What are the purposes of using lookups?
Explain what are the roles performed by the SQL?
Briefly explain the batch processing in Business Objects?
Explain the slowly changing dimensions?
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