Question
The present age of a father is three  times the
present age of his son. After 10 years, the father’s age will be twice  the age of his son. What is the present age of the son?Solution
ATQ, Let son’s present age = x Father’s present age = 3x After 10 years: Son = x + 10 Father = 3x + 10 Given: 3x + 10 = 2(x + 10) 3x + 10 = 2x + 20 3x − 2x = 20 − 10 x = 10 So son’s present age = 10 years.
Which clause is used to sort the results in SQL?
Which SQL clause is used to filter records after aggregation?
Which type of slowly changing dimension (SCD) preserves full history by adding a new row for each change and using effective date ranges?
A Fact Constellation Schema is also called:
What is the primary function of ETL in a data warehouse environment?
Which of the following stores historical data for analysis?
Which of the following is NOT a characteristic of OLAP systems?
Which of the following commands is part of the Transaction Control Language (TCL) in SQL?
Which of the following is a real-time data warehouse application?
Data cleansing is primarily concerned with:
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