Data science Interview question asked in TCS

Following questions are collected from various data science  Interview questions asked in company like TCS, Amex , EXL, Infosys Amex Cognizant , Genpact,amazozn,flip kart….?

1. What are file format used in your project?
2. Have you ever used API for data source?
3. Have you used API for any data source? which API? is it relational are non relational database? if not Relational  name  the data model format?
4. Have you used Nosql database ?
5. Have you ever used any real-world data sources for any project?
6. Have you ever used CSV, XML or JSON in your data source?
7. When you use SQL query ,result of SQL query is in which data model format returned?
8. When you create a datasets through panda package in python ,created in which data model format? Is this a relational database?
9. Generally you used relational database is in which normal form?
10. Have you ever used Hierarchical Data Model format? if yes : name the format?
11. Name few Python in-memory data structures?
12. In your project : where data source stored ?
13. What is working directory?

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