King Digital Entertainment Interview Questions and Answers

Explanation of row number, rank, dense rank, partition by, indexing joins, and query optimization techniques.

• Row number is a function that assigns a unique number to each row in a result set.

• Rank is a function that assigns a rank to each row based on the values in a specified column.

• Dense rank is a function that assigns a rank to each row based on the values in a specified column, but with no gaps in the ranking.

• Partit...read more

Real-time examples of data analytics

• Predictive maintenance in manufacturing

• Real-time fraud detection in banking

• Personalized recommendations in e-commerce

• Real-time traffic analysis for smart cities

• Real-time health monitoring in medical devices

Polymorphism can be used to create a Card class with different types of cards. A function can then use polymorphism to randomize the pack.

• Create a Card class with different types of cards as subclasses

• Implement a function that creates a pack of cards using polymorphism to add different types of cards

• Use a random number generator to shuffle the pack