Multidimensional data model
Write down the brief notes on multidimensional data model.
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Data warehouses and OLTP tools are based upon the multidimensional data model. This model is utilized for the development of the corporate data warehouses and department data marts. This model consists of the Snowflake schema, Star schema and fact constellation schemas. The core of multidimensional model is known as the data cube.
Explain the Combined Query?
What is OLAP? Briefly define it.
Why recursive relationships are not good? How do you solve them?
What demerits of ODBC does OLE DB overcome?
What is meant by the data modelling?
State various types of the input links within the data stage?
How can we increase the performance within the Data Stage?
What do you understand by the term cascading update in DBMS?
Explain the Data Transformation Manager (DTM)?
Define the term Event studio?
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