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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
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Discuss the methods for a hash file to expand and shrink dynamically. What are the advantages and disadvantages of each? The hashing methods that permit dyanamic file expansi
Benefits and Limitations od Data Models?
Attributes and its types explain?
er diagram of sport
What are composite attributes? Composite attributes can be separated in to sub parts.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
why are older data models are being replaced by new data models
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