What is virtual warehouse
Explain what do you mean by the virtual warehouse?
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A virtual warehouse is defined as the group of views over the operational databases. For proficient query processing, only some of the possible summary views may be materialized. A virtual warehouse is easy to form however need excess capability on the operational database servers.
Explain several of the products of Sybase?
Describe briefly reusable transformations?
Explain the Filter transformation?
Name the main data structures used in these areas: Hierarchical data model, RDBMS and Network data model?
Specify the other areas for the purpose of Data warehousing and the data mining.
List out some of the features of a relation in DBMS?
Assume when a session fails subsequent to loading of 10,000 records in to target. How can we load the records from 10001 the record when we run session next time?
Identify those statements are true about a foreign key?
Write down some of the differences between the data query and the knowledge query.
Explain Triggers and Rules?
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