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<chapter id="GiST">
</sect1>
-<sect1 id="limitations">
- <title>Limitations</title>
-
- <para>
- The current implementation of <acronym>GiST</acronym> within
- <productname>PostgreSQL</productname> has some major limitations:
- <acronym>GiST</acronym> index access is not concurrent, and the
- <acronym>GiST</acronym> interface doesn't allow the development of certain
- data types, such as digital trees (see papers by Aoki et al).
- </para>
-
- <para>
- Solutions to the concurrency problems appear in Marcel Kornacker's
- thesis; however these ideas have not yet been put into practice in the
- <productname>PostgreSQL</productname> implementation.
- </para>
-
-</sect1>
-
<sect1 id="examples">
<title>Examples</title>