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Learn PostgreSQL

You're reading from   Learn PostgreSQL Build and manage high-performance database solutions using PostgreSQL 12 and 13

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781838985288
Length 650 pages
Edition 1st Edition
Languages
Concepts
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Authors (2):
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Enrico Pirozzi Enrico Pirozzi
Author Profile Icon Enrico Pirozzi
Enrico Pirozzi
Luca Ferrari Luca Ferrari
Author Profile Icon Luca Ferrari
Luca Ferrari
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Toc

Table of Contents (27) Chapters Close

Preface 1. Section 1: Getting Started
2. Introduction to PostgreSQL FREE CHAPTER 3. Getting to Know Your Cluster 4. Managing Users and Connections 5. Section 2: Interacting with the Database
6. Basic Statements 7. Advanced Statements 8. Window Functions 9. Server-Side Programming 10. Triggers and Rules 11. Partitioning 12. Section 3: Administering the Cluster
13. Users, Roles, and Database Security 14. Transactions, MVCC, WALs, and Checkpoints 15. Extending the Database - the Extension Ecosystem 16. Indexes and Performance Optimization 17. Logging and Auditing 18. Backup and Restore 19. Configuration and Monitoring 20. Section 4: Replication
21. Physical Replication 22. Logical Replication 23. Section 5: The PostegreSQL Ecosystem
24. Useful Tools and Extensions 25. Toward PostgreSQL 13 26. Other Books You May Enjoy

Understanding roles

In Chapter 3, Managing Users and Connections, you have seen how to create new roles, a stereotype that can act both as a single user or a group of users. The CREATE ROLE statement was used to create the role, and you learned about the main properties a role can be associated with.

This section extends the concepts you have read about in Chapter 3, Managing Users and Connections, introducing more interesting and security-related properties of a role.

Just as a quick reminder, the synopsis for creating a new role is the following:

CREATE ROLE name [ [ WITH ] option [ ... ] ]

Here, an option can be indicated in a positive form, that is, associating the property with the role, or in a negative form with the NO prefix, which removes the property from the role. Some properties are not assigned to new roles by default, so you should take your time and consult the documentation of the CREATE ROLE statement in order to see what the default value is for every property. If you...

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