MySQL Tutorials - Herong's Tutorial Notes

∟Transaction Management and Isolation Levels

This chapter provides tutorial notes on transactions. Topics include introduction of transactions, transaction management in MySQL, transaction isolation levels: Read Uncommitted, Read Committed, Repeatable Read, Serializable.

What Is a Transaction?

Transaction Management in MySQL

Transaction Isolation Levels

"Read Uncommitted" Isolation Level

"Read Committed" Isolation Level

"Repeatable Read" Isolation Level

Conclusion:

• A transaction is a sequence of executions of DML statements to be treated as single unit.
• Transaction management are supported by InnoDB and BDB storage engines in MySQL.
• 4 levels of transaction isolation are supported: Read Uncommitted, Read Committed, Repeatable Read, Serializable.

All notes and examples in chapter are based on SQL-92 and MySQL 5.0 server.

Table of Contents

 About This Book

 Introduction of SQL

 MySQL 4.0 Introduction and Installation

 Installing MySQL 5.5.15

 Installing MySQL 5.0.2 (Alpha)

 Introduction of MySQL 5.0 Programs

 Perl Programs and MySQL Servers

 PHP Programs and MySQL Servers

 Java Programs and MySQL Servers

 Datatypes and Data Literals

 Operations and Expressions

 Character Strings and Bit Strings

 Commonly Used Functions

 Table Column Types for Different Types of Values

 Using DDL to Create Tables and Indexes

 Using DML to Insert, Update and Delete Records

 Using SELECT to Query Database

►Transaction Management and Isolation Levels

 Locks-Used-in-MySQL

 Defining and Calling Stored Procedures

 Variables, Loops and Cursors Used in Stored Procedures

 References

 Printable Copy - PDF Version