Diggibyte Technologies Data Science Intern Interview Questions and Answers

Python has for and while loops. For loop iterates over a sequence and while loop executes a block of code while a condition is true.

• For loop syntax: for variable in sequence: block of code

• While loop syntax: while condition: block of code

• Example: for i in range(5): print(i) will print 0 to 4

• Example: while x < 5: print(x); x += 1 will print 0 to 4

SQL writing is crucial for data engineers to manage, manipulate, and retrieve data efficiently from databases.

• Data Retrieval: SQL allows for efficient querying of large datasets. Example: SELECT * FROM users WHERE age > 30;

• Data Manipulation: SQL enables data insertion, updates, and deletions. Example: UPDATE users SET status = 'active' WHERE last_login > '2023-01-01';

• Data Aggregation: SQL can summarize data using...read more

I have worked on various technologies including Hadoop, Spark, SQL, Python, and AWS.

• Experience with Hadoop and Spark for big data processing

• Proficient in SQL for data querying and manipulation

• Skilled in Python for data analysis and scripting

• Familiarity with AWS services such as S3, EC2, and EMR

• Knowledge of data warehousing and ETL processes

Design a scalable and efficient platform for booking accommodations, flights, and experiences.

• User Interface: Create a user-friendly interface for searching and booking accommodations.

• Database Design: Use a relational database for storing user data, bookings, and property details.

• Search Functionality: Implement a robust search algorithm to filter results based on user preferences.

• Scalability: Use microservices architec...read more