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Learning PostgreSQL 10

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

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Product type Paperback
Published in Dec 2017
Publisher
ISBN-13 9781788392013
Length 488 pages
Edition 2nd Edition
Languages
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Authors (2):
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Andrey Volkov Andrey Volkov
Author Profile Icon Andrey Volkov
Andrey Volkov
Salahaldin Juba Salahaldin Juba
Author Profile Icon Salahaldin Juba
Salahaldin Juba
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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

The car web portal database

At this stage, one can convert the logical model of the car web portal presented in Chapter 01, Relational Databases, to a physical model. To help the developer to create a table, one can follow this minimal checklist:

  • What is the primary key?
  • What is the default value for each column?
  • What is the type of each column?
  • What are the constraints on each column or set of columns?
  • Are permissions set correctly on tables, sequences, and schemas?
  • Are foreign keys specified with the proper actions?
  • What is the data life cycle?
  • What are the operations allowed on the data?

To create the car web portal schema, the formal relational model will not be applied strictly. Also, surrogate keys will be used instead of natural keys. The advantages for using surrogate keys is as follows: 

  • Natural keys can change; one can change the current email address to another...
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