diff options
Diffstat (limited to 'doc/src/sgml/geqo.sgml')
| -rw-r--r-- | doc/src/sgml/geqo.sgml | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/src/sgml/geqo.sgml b/doc/src/sgml/geqo.sgml index 4cbf82a9bd..2810f578a8 100644 --- a/doc/src/sgml/geqo.sgml +++ b/doc/src/sgml/geqo.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/geqo.sgml,v 1.19 2001/10/09 18:46:00 petere Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/geqo.sgml,v 1.20 2001/11/21 05:53:41 thomas Exp $ Genetic Optimizer --> @@ -49,14 +49,14 @@ Genetic Optimizer grows exponentially with the number of joins included in it. Further optimization effort is caused by the support of a variety of <firstterm>join methods</firstterm> - (e.g., nested loop, hash join, merge join in <productname>Postgres</productname>) to + (e.g., nested loop, hash join, merge join in <productname>PostgreSQL</productname>) to process individual joins and a diversity of <firstterm>indexes</firstterm> (e.g., R-tree, - B-tree, hash in <productname>Postgres</productname>) as access paths for relations. + B-tree, hash in <productname>PostgreSQL</productname>) as access paths for relations. </para> <para> - The current <productname>Postgres</productname> optimizer + The current <productname>PostgreSQL</productname> optimizer implementation performs a <firstterm>near-exhaustive search</firstterm> over the space of alternative strategies. This query optimization technique is inadequate to support database application @@ -67,7 +67,7 @@ Genetic Optimizer <para> The Institute of Automatic Control at the University of Mining and Technology, in Freiberg, Germany, encountered the described problems as its - folks wanted to take the <productname>Postgres</productname> DBMS as the backend for a decision + folks wanted to take the <productname>PostgreSQL</productname> DBMS as the backend for a decision support knowledge based system for the maintenance of an electrical power grid. The DBMS needed to handle large join queries for the inference machine of the knowledge based system. @@ -166,7 +166,7 @@ Genetic Optimizer </sect1> <sect1 id="geqo-pg-intro"> - <title>Genetic Query Optimization (<acronym>GEQO</acronym>) in Postgres</title> + <title>Genetic Query Optimization (<acronym>GEQO</acronym>) in PostgreSQL</title> <para> The <acronym>GEQO</acronym> module is intended for the solution of the query @@ -183,7 +183,7 @@ Genetic Optimizer is encoded by the integer string '4-1-3-2', which means, first join relation '4' and '1', then '3', and then '2', where 1, 2, 3, 4 are relids within the - <productname>Postgres</productname> optimizer. + <productname>PostgreSQL</productname> optimizer. </para> <para> @@ -193,7 +193,7 @@ Genetic Optimizer <para> Specific characteristics of the <acronym>GEQO</acronym> - implementation in <productname>Postgres</productname> + implementation in <productname>PostgreSQL</productname> are: <itemizedlist spacing="compact" mark="bullet"> @@ -226,7 +226,7 @@ Genetic Optimizer <para> The <acronym>GEQO</acronym> module allows - the <productname>Postgres</productname> query optimizer to + the <productname>PostgreSQL</productname> query optimizer to support large join queries effectively through non-exhaustive search. </para> |