Question
Given below are two statements, one is labelled as
Assertion A and other is labelled as Reason R Assertion A: The temperature increases with increasing height in the stratosphere. Reason R: Ozone absorbs ultra violet radiation in the stratosphere and makes it warm. In light of the above statements, choose the correct answer from the options given belowSolution
Both A and R are true and R is the correct explanation of A Ozone layer is found in the stratosphere at the height of 20 km and is responsible for trapping the heat energy.Â
Which of the following storage devices is considered non-volatile?
A collection of Data organized in a manner that allows access, retrieval & use of the data
Pick the odd one out.
Which of the following is used to speed up data retrieval in a relational database?
In a relational database, a foreign key is used to:
What is the purpose of the SQL "HAVING" clause?
Which of the following concurrency control techniques allows multiple transactions to read data simultaneously but ensures that only one transaction ca...
 In database management, which SQL command is used to remove a table and all its data from a database?
Which type of database backup only includes the data that has changed since the last full backup?
In the context of databases, what does the term sharding refer to?