even though they are not yet committed.) This is a stronger

guarantee than is required by the <acronym>SQL</acronym> standard

for this isolation level, and prevents all of the phenomena described

in <xref linkend="mvcc-isolevel-table">. As mentioned above, this is

in <xref linkend="mvcc-isolevel-table"> except for serialization

anomalies. As mentioned above, this is

specifically allowed by the standard, which only describes the

<emphasis>minimum</emphasis> protections each isolation level must

provide.