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>    All large objects are placed in a single system table called
    <CODE
CLASS="CLASSNAME"
>pg_largeobject</CODE
>.
    <SPAN
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>PostgreSQL</SPAN
> also supports a storage system called
    <SPAN
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>"<ACRONYM
CLASS="ACRONYM"
>TOAST</ACRONYM
>"</SPAN
> that automatically stores values
    larger than a single database page into a secondary storage area per table.
    This makes the large object facility partially obsolete.  One
    remaining advantage of the large object facility is that it allows values
    up to 2 GB in size, whereas <ACRONYM
CLASS="ACRONYM"
>TOAST</ACRONYM
>ed fields can be at
    most 1 GB.  Also, large objects can be randomly modified using a read/write
    API that is more efficient than performing such operations using
    <ACRONYM
CLASS="ACRONYM"
>TOAST</ACRONYM
>.
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