Product Support Engineer Interview Questions and Answers for Freshers

Types of joins and difference between truncate and delete

• Types of joins: inner join, left join, right join, full outer join, self join

• Inner join returns only matching rows from both tables

• Left join returns all rows from left table and matching rows from right table

• Right join returns all rows from right table and matching rows from left table

• Full outer join returns all rows from both tables

• Self join is used to join a table to itself

• Truncate removes all data from a table and re...read more

Map Dependency of CR refers to the relationship between change requests and their corresponding impact on various components of a system.

• CRs are mapped to specific components or modules within a system to track the impact of changes.

• This mapping helps in understanding the dependencies between different parts of the system.

• By identifying map dependencies, engineers can assess the potential risks and plan for necessary adjustments.

• For example, if a CR involves changes to a data...read more

Python code to find the factorial of a number

• Use a recursive function to calculate the factorial

• Handle edge cases like 0 and negative numbers

• Factorial of a number n is the product of all positive integers less than or equal to n