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Learning PostgreSQL 10 - Second Edition

You're reading from Learning PostgreSQL 10 - Second Edition

Product type Book

Published in Dec 2017

Publisher

ISBN-13 9781788392013

Pages 488 pages

Edition 2nd Edition

Languages

Concepts

Database Programming

Table of Contents (23) Chapters

Title Page

Credits

About the Authors

About the Reviewers

www.PacktPub.com

Customer Feedback

Preface

Relational Databases

PostgreSQL in Action

PostgreSQL Basic Building Blocks

PostgreSQL Advanced Building Blocks

SQL Language

Advanced Query Writing

Server-Side Programming with PL/pgSQL

OLAP and Data Warehousing

Beyond Conventional Data Types

Transactions and Concurrency Control

PostgreSQL Security

The PostgreSQL Catalog

Optimizing Database Performance

Testing

Using PostgreSQL in Python Applications

Scalability

View categories

Views in PostgreSQL can be categorized into one of the following categories on the basis of their usage:

Temporary views: A temporary view is dropped automatically at the end of a user session. If the TEMPORARY or TEMP keywords are not used, then the life cycle of the view starts with the view creation and ends with the action of dropping it.
Recursive views: A recursive view is similar to recursive functions in high-level languages. The view column list should be specified in recursive views. Recursion in relational databases, such as in recursive views or recursive common table expressions (CTEs), can be used to write very complex queries, specifically for hierarchical data.
Updatable views: Updatable views allow the user to see the view as a table. This means that the developer can perform INSERT, UPDATE and DELETE on views similar to tables. Updatable views can help in bridging the gap between an object model and a relational model to some extent, and they can help in overcoming...

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