Questions
- What is the difference between a function and a stored procedure?
 - What is the difference between a trusted and an untrusted language?
 - In general, are functions good or bad?
 - Which server-side languages are available in PostgreSQL?
 - What is a trigger?
 - Which languages can be used to write functions?
 - Which language is the fastest?
 
Answers to these questions can be found in the GitHub repository (https://github.com/PacktPublishing/Mastering-PostgreSQL-15-).