Question
Statements:No star is a train. No train is a
galaxy. Conclusions: I. Some stars are not trains. II. No star is a galaxy. In each question below are given two statements followed by two conclusions numbered I and II. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts. Give Answer:Solution
No star is a train (E) ⇒ I.I ⇒ Some stars are not trains (O). Hence, conclusion I will follow. E + E ⇒ No definite conclusion. Hence, conclusion II will not follow.
A surrogate key is:
Which analytics type is focused on predicting future outcomes?
In a snowflake schema of a data warehouse, which of the following consequences is most likely as a result of normalization of dimension tables?
Which SQL query will correctly calculate the average salary of employees in each department and group them by department in a table named 'employees'?
Which of the following best describes a fact constellation schema in a data warehouse?
Which of the following commands is part of the Transaction Control Language (TCL) in SQL?
Which of these is NOT an ensemble method?
Which of the following best describes the primary function of a database index?
What is meant by 'cardinality' in data modeling?
In the context of a relational database, which of the following is NOT a characteristic of a candidate key ?