Datamato Software Engineer Trainee Interview Questions and Answers

Reverse an array of strings

• Iterate through the array from both ends and swap the elements

• Continue swapping until the middle of the array is reached

Yes, I am open to relocating for the right opportunity.

• I am willing to consider relocation if the job aligns with my career goals.

• I am open to exploring new cities and cultures.

• I am willing to relocate for a better work-life balance or career advancement opportunities.

Inner join returns only matching rows from both tables while outer join returns all rows from one table and matching rows from the other.

• Inner join is used to combine data from two tables based on a common column.

• Outer join is used to combine data from two tables where one table may not have matching rows in the other.

• There are three types of outer join: left outer join, right outer join, and full outer join.

• Left outer...read more

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived class.

• An abstract class can have constructors and fields.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is an abstract c...read more

Normalization is a process of organizing data in a database to reduce redundancy and dependency.

• Normalization is used to eliminate data redundancy and dependency.

• 3NF (Third Normal Form) eliminates transitive dependencies while BCNF (Boyce-Codd Normal Form) eliminates partial dependencies.

• 3NF is a subset of BCNF.

• Normalization helps in improving data consistency and integrity.

• Normalization can also improve database perfo