Master SQL for Data Analysis - Database Dictionary

The video tutorial explains the importance of the Data Dictionary in understanding database structures, including tables, columns, and constraints. It discusses using database server tools like OSTQL for a visual representation of data components and how to query the information schema to retrieve metadata. The tutorial provides examples of SQL queries to list tables, columns, and constraints, emphasizing the utility of these methods when a user interface is unavailable.

What types of constraints can be retrieved using the information_schema table constraints view?

Why is it important to understand the list of columns and constraints in a table?