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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 techniques
3 What is repository? How is it helpful to the data warehouse maintenance?
4 Explain the following strategies for Data Warehouse testing
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we
what do you mean by consistency in rdbms?
What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one
Explain the Check Clause The CHECK clause is employed to at the end of a CREATE TABLE statement specify table constraints. This is known as table-based constraint because it ap
what is Nested relational model? Explain with examples.
WHAT IS SQL
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
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