Here is a table quick reference of some common database and/or connection types, which use connection level isolation and the equivalent isolation levels. This quick reference may prove useful as a job aid reference, when working with and making decisions about isolation level usage.

Database isolation levels

Data sources	Most restrictive isolation level	More restrictive isolation level	Less restrictive isolation level	Least restrictive isolation level
Amazon SimpleDB	Serializable	Repeatable read	Read committed	Read Uncommitted
dashDB	Repeatable read	Read stability	Cursor stability	Uncommitted read
DB2® family of products	Repeatable read	Read stability*	Cursor stability	Uncommitted read
Informix®	Repeatable read	Repeatable read	Cursor stability	Dirty read
JDBC	Serializable	Repeatable read	Read committed	Read Uncommitted
MariaDB	Serializable	Repeatable read	Read committed	Read Uncommitted
Microsoft SQL Server	Serializable	Repeatable read	Read committed	Read Uncommitted
MySQL	Serializable	Repeatable read	Read committed	Read Uncommitted
ODBC	Serializable	Repeatable read	Read committed	Read Uncommitted
Oracle	Serializable	Serializable	Read committed	Read committed
PostgreSQL	Serializable	Repeatable read	Read committed	Read committed
Sybase	Level 3	Level 3	Level 1	Level 0

Related References

• What are the dashDB isolation levels?
• Database – What is a Primary Key?
• Database – What is a Composite Primary Key?
• What are the types of Database Management Systems (DBMS)?
• Database Table Field Ordering Effective Practices
• Data Modeling – What is Data Modeling?