Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning PostgreSQL 10

You're reading from   Learning PostgreSQL 10 A beginner's guide to building high-performance PostgreSQL database solutions

Arrow left icon
Product type Paperback
Published in Dec 2017
Publisher
ISBN-13 9781788392013
Length 488 pages
Edition 2nd Edition
Languages
Arrow right icon
Authors (2):
Arrow left icon
Andrey Volkov Andrey Volkov
Author Profile Icon Andrey Volkov
Andrey Volkov
Salahaldin Juba Salahaldin Juba
Author Profile Icon Salahaldin Juba
Salahaldin Juba
Arrow right icon
View More author details
Toc

Table of Contents (17) Chapters Close

Preface 1. Relational Databases FREE CHAPTER 2. PostgreSQL in Action 3. PostgreSQL Basic Building Blocks 4. PostgreSQL Advanced Building Blocks 5. SQL Language 6. Advanced Query Writing 7. Server-Side Programming with PL/pgSQL 8. OLAP and Data Warehousing 9. Beyond Conventional Data Types 10. Transactions and Concurrency Control 11. PostgreSQL Security 12. The PostgreSQL Catalog 13. Optimizing Database Performance 14. Testing 15. Using PostgreSQL in Python Applications 16. Scalability

Role system and proxy authentication


Often, when designing an application, a user is used to configure database connections and connection tools. Another level of security needs to be implemented to ensure that the user who uses the application is authorized to perform a certain task. This logic is often implemented in application business logic. The database's role system can also be used to partially implement this logic by delegating the authentication to another role after the connection is established or reused, using the SET SESSION AUTHORIZATION statement or SET ROLE command in a transaction block:

postgres=# SELECT session_user, current_user;
 session_user | current_user 
--------------+--------------
 postgres | postgres
(1 row)

postgres=# SET SESSION AUTHORIZATION test_user;
SET
postgres=> SELECT session_user, current_user;
 session_user | current_user 
--------------+--------------
 test_user | test_user
(1 row)

The SET ROLE requires a role membership, while SET SESSION AUTHORIZATION...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime