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Problem 1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples 2 Explain the following performance tuning techn
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Which method is used to key transformation ? A hash method is used to key transformation.
Question (a) Concurrent access to data from a database is a normal part of application program usage. Describe three approaches to concurrency control (b) Distinguish among
Express types of information available in MySQL? Information as regards the result of queries: This includes number of records affected by any SELECT or UPDATE or DELETE st
Critically explained the benefits and limitations of different database technologies with proper examples
A student entity type has the following attributes,name..
INSERT INTO command : Values can be inserted for all columns or for the selected columns Values can be given by sub query. In place of values parameter substitution
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
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