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Add some real documentation about TOAST (finally). Combine this with

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the old 'page' chapter and the recently added 'filelayout' chapter to
make a coherent chapter about PostgreSQL's physical storage layout.
This commit is contained in:
Tom Lane
2005-01-10 00:04:43 +00:00
parent 521e8888e9
commit ab3bb9cf78
9 changed files with 704 additions and 535 deletions
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10
doc/src/sgml/lobj.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/lobj.sgml,v 1.35 2005/01/08 22:13:33 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/lobj.sgml,v 1.36 2005/01/10 00:04:38 tgl Exp $
-->
<chapter id="largeObjects">
@@ -51,9 +51,11 @@ $PostgreSQL: pgsql/doc/src/sgml/lobj.sgml,v 1.35 2005/01/08 22:13:33 tgl Exp $
</para>
<para>
<indexterm><primary>TOAST</></>
<indexterm><primary>sliced bread</><see>TOAST</></indexterm>
<productname>PostgreSQL 7.1</productname> introduced a mechanism
<indexterm>
<primary>TOAST</primary>
<secondary>versus large objects</secondary>
</indexterm>
<productname>PostgreSQL</productname> 7.1 introduced a mechanism
(nicknamed <quote><acronym>TOAST</acronym></quote>) that allows
data values to be much larger than single pages. This
makes the large object facility partially obsolete. One