learn-co-students / dsc-sql-interview-questions-quiz-online-ds-pt-061019

SQL Interview Questions - Quiz

Introduction

In this lesson, we'll go through a short quiz containing the types of questions about SQL and relational databases that you can expect to see in an interview.

SQL Interview Questions

This quiz contains questions on topics you can expect to see in an interview pertaining to SQL and Relational Databases. Some of them are multiple choice, while some are short answer. For these short answer questions, double click on the Jupyter Notebook and type your answer below the line.

Question 1

what are the 4 main datatypes in SQLite3? Can we use other common types from other kinds of SQL?

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Question 2

Explain the relationship between Primary Keys and Foreign Keys.

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Question 3

Explain the different types of relationships entities can have in a SQL database.

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Question 4

Explain the various types of JOINs possible with SQL.

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Question 5

Explain the relationship between Aggregate functions and GROUP BY statements.

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Question 6

What role do Associative Entities play (JOIN Tables) in many-to-many JOINs?

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Summary

In this lesson, we practiced answering open-ended interview questions for SQL and Relational Databases.