Serialization, This is the higest level of Isolation.
When this is on, no dirty reads, no nonrepeatable reads
and no phantom rows.

Serialization is highest level of Isolation. Most resource
intensive and slowest isolation level. But because of
serialization isolation level all concurrency issues like
dirty read, repeatable read and phantom read won't occur.

Serialization means organise data with relations between 
tables.Removing duplicate row maintain structured data.