InApp Information Technologies Node Developer Interview Questions and Answers

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization helps in minimizing data redundancy by dividing the database into multiple tables.

• It ensures data integrity by avoiding update anomalies.

• Normalization is achieved through a series of rules called normal forms, such as 1NF, 2NF, 3NF, etc.

• Example: In a database, instead of storing customer details i...read more

Reflection is the ability of a program to examine and modify its own structure and behavior at runtime.

• Allows accessing metadata of types and members at runtime

• Enables dynamic instantiation of objects

• Facilitates invoking methods dynamically

Increment last element of array by 1 and carry over to second last element

• Iterate through the array in reverse order

• Increment the last element by 1 and check if it becomes 10

• If last element becomes 10, set it to 0 and carry over 1 to the second last element