Data Science Model Deployments and Cloud Computing on GCP - Relational Databases - SQL

This video introduces relational databases, focusing on SQL and table structures. It explains how data is organized in tables with primary keys and how tables can be related using SQL syntax. The video also covers joining tables and filtering data, and discusses different SQL flavors, highlighting Postgres as the choice for examples.

What is the primary purpose of a primary key in a relational database?

• To sort data in ascending order

• To connect two tables together

• To uniquely identify each record in a table

• To store data in a readable format

In the example provided, what does the mood ID in the dog table represent?

• The breed of the dog

• The name of the dog

• The mood of the dog

• The age of the dog

Which SQL syntax is used to combine data from two tables?

• SELECT

• JOIN

• INSERT

• DELETE

Which of the following is a Microsoft product for SQL databases?

• Oracle

• SQL Server

• Postgres

• MySQL

What is the correct pronunciation of Postgres according to the video?

• Postgres

• Postgre

• PostgreS

• PostgreSQL