The Full Stack Web Development - Queries & Constraints in psql

This video tutorial covers using the PSQL shell to create and manage tables in a PostgreSQL database. It begins with logging into the PSQL shell and creating an 'articles' table with fields for ID, title, and body. The tutorial demonstrates inserting data into the table and selecting it. A 'categories' table is also created, and data is inserted. The video explains how to add a category ID to articles and update records. It concludes with adding a foreign key constraint and demonstrating CRUD operations, including deleting records.

What command is used to create a new table in PSQL?

• CREATE TABLE

• NEW TABLE

• ADD TABLE

• TABLE CREATE

Which data type is used for auto-incrementing IDs in PSQL?

• AUTO

• AUTO_INCREMENT

• SERIAL

• INCREMENT

What is the purpose of the 'INSERT INTO' command?

• To delete data from a table

• To create a new table

• To update data in a table

• To add new data to a table

How do you verify the data in a table after insertion?

• VIEW table_name

• SHOW DATA FROM table_name

• SELECT * FROM table_name

• DISPLAY table_name

What command is used to add a new column to an existing table?

• UPDATE TABLE

• CHANGE TABLE

• ALTER TABLE

• MODIFY TABLE

What is the purpose of a foreign key constraint?

• To link tables together

• To increase query speed

• To allow null values

• To ensure data uniqueness

Which tool provides a graphical user interface for managing PostgreSQL databases?

• MySQL Workbench

• PGADMIN 4

• Oracle SQL Developer

• SQL Server Management Studio