Question
The distance between stations X and Y is 672 km. A train
leaves X at 9 a.m. at 64 km/h. Another train leaves Y at 10:30 a.m. towards X at 96 km/h. When will they meet?Solution
Time gap = 1.5 hrs → Distance = 64 × 1.5 = 96 km
Remaining = 672 – 96 = 576 km
Relative speed = 160 km/h
Time = 576 / 160 = 3.6 hrs = 3h 36m
Meeting time = 10:30 a.m. + 3h 36m = 2:06 p.m.
A star schema in a data warehouse consists of:
Which process ensures data in a data warehouse is consistent and clean?
Which analytics type is focused on predicting future outcomes?
Which SQL clause is used to summarize data?
Which type of OLAP allows analysis of multidimensional data stored in relational databases?
Which of the following is a real-time data warehouse application?
Which of the following best defines the concept of the "Internet of Things" (IoT)?
Which of the following commands is part of the Transaction Control Language (TCL) in SQL?
A Fact Constellation Schema is also called:
Which of the following best describes the primary function of a database index?
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