Question
A 300 m train crosses a platform in 24 s and a man
standing on it in 18 s. Find the platform’s length.Solution
ATQ,
Speed = 300/18 = 16.67 m/s Let platform = x → (x + 300)/24 = 16.67 → x + 300 = 400 → x = 100 m
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?
