Question
A and B individually can complete the work in 30 days
and 45 days respectively. If the time taken by C alone to complete the work is 1.5 times the time taken by A and B together to complete the work, find the time taken by C to complete the work while working alone.Solution
Time taken by A and B together to complete the work = (30 × 45)/ (30 + 45) = 18 days Time taken by C alone to complete the work = 1.5 × 18 = 27 days
In a data warehouse, a fact table typically contains:
Which type of schema uses a central fact table connected to dimension tables?
Which analytics type is focused on predicting future outcomes?
Metadata in data warehousing refers to:
What is a 'star schema' in data warehouse design?
Which of the following best describes a fact constellation schema in a data warehouse?
Which OLAP operation involves focusing on a subset of dimensions (e.g., region=‘Asia’)?
In a data warehouse, which type of table stores quantitative data for analysis?
A snowflake schema is different from a star schema because:
Which clause is used to sort the results in SQL?
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