Question
A vessel contains some milk .6 liter of the milk was
taken out of the vessel and replaced with 6 liter of water and again 6 liter of mixture was taken out and was replaced with water. Now the ratio of milk to water become 100:69. Find the initial Quantity of milk in the vessel.Solution
Let the Quantity of milk initially is x liter. Using Direct Formula, =100/100+69 = (x-6 / x)2 =100/169 = (x-6/x)2 x-6/x = 10/13 13x -78 = 10x 3x = 78 X =26 liter
Surrogate keys are used in data warehouses because:
Which analytics type is focused on predicting future outcomes?
Which of these is NOT an ensemble method?
In a star schema, what is the primary characteristic of the fact table?
Fact constellation schema is best described as:
A data cube allows analysis by:
Which of the following is NOT a common OLAP operation?
In ETL pipelines, which step is primarily responsible for resolving inconsistencies and correcting data quality issues (e.g., missing values, inconsiste...
Which of the following best describes a Data Warehouse?
Data warehouse metadata primarily describes:
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