Explain what are the vaious etl tools in the market?
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for data loading in oracle, what are conventional loading , what are conventional loading and direct-path loading?
What is the difference between metadata and data dictionary?
What is difference between query studio and report studio?
What is IQD file?
Do you always need to copy the data before reporting on it?(Example, real-time & on-demand reporting is a requirement)?
What is your spectra photometer working principles?
What is a cube in data warehousing concept?
What is ods (operation data source)?
What is cubes?
Why null values are mapped as 0 in fact tables?
Explain is olap databases are called decision support system true/false?
How are models actually derived?