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Advanced MySQL 8

You're reading from   Advanced MySQL 8 Discover the full potential of MySQL and ensure high performance of your database

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Product type Paperback
Published in Jan 2019
Publisher
ISBN-13 9781788834445
Length 286 pages
Edition 1st Edition
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Authors (3):
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Birju Shah Birju Shah
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Birju Shah
Eric Vanier Eric Vanier
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Eric Vanier
Tejaswi Malepati Tejaswi Malepati
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Tejaswi Malepati
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Table of Contents (13) Chapters Close

Preface 1. Introduction 2. MySQL 8's New Features FREE CHAPTER 3. Indexing Your Data for High Performance 4. Advanced Data Techniques for Large Queries 5. MySQL Data Dictionary in MySQL 8.0 6. MySQL Server Settings 7. Group Replication in MySQL 8.0 8. InnoDB Cluster in MySQL 8.0 9. Monitoring Your Large Distributed Databases 10. Authentication and Security Management with MySQL 8.0 11. Advanced MySQL Performance Tips and Techniques 12. Other Books You May Enjoy

Transactional storage of the data dictionary

In the past, the MySQL data dictionary was stored in the file metadata and non-transactional tables, as already indicated in previous sections, but in MySQL 8.0 we now have a transactional data dictionary to store the information on the database objects.

The main difference between the tables MySQL system and data dictionary tables is that the system tables contain auxiliary data, such as time zone and help information, while the data dictionary tables contain the data required to perform SQL queries.

That said, the transactional storage of the data dictionary stores dictionary data in tables such as InnoDB, and not MyISAM as before. These tables of data dictionaries are located in the mysql schema with the other system tables.

The dictionary data is now protected by the same validation, restoration, and recovery after an incident that...

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