diff options
Diffstat (limited to 'doc/src/sgml/arch-dev.sgml')
| -rw-r--r-- | doc/src/sgml/arch-dev.sgml | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/doc/src/sgml/arch-dev.sgml b/doc/src/sgml/arch-dev.sgml index 84575ea52e7..54386ca264a 100644 --- a/doc/src/sgml/arch-dev.sgml +++ b/doc/src/sgml/arch-dev.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/arch-dev.sgml,v 2.31 2007/12/12 06:23:27 tgl Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/arch-dev.sgml,v 2.32 2009/04/27 16:27:35 momjian Exp $ --> <chapter id="overview"> <title>Overview of PostgreSQL Internals</title> @@ -67,7 +67,7 @@ One application of the rewrite system is in the realization of <firstterm>views</firstterm>. Whenever a query against a view - (i.e. a <firstterm>virtual table</firstterm>) is made, + (i.e., a <firstterm>virtual table</firstterm>) is made, the rewrite system rewrites the user's query to a query that accesses the <firstterm>base tables</firstterm> given in the <firstterm>view definition</firstterm> instead. @@ -145,7 +145,7 @@ <para> Once a connection is established the client process can send a query to the <firstterm>backend</firstterm> (server). The query is transmitted using plain text, - i.e. there is no parsing done in the <firstterm>frontend</firstterm> (client). The + i.e., there is no parsing done in the <firstterm>frontend</firstterm> (client). The server parses the query, creates an <firstterm>execution plan</firstterm>, executes the plan and returns the retrieved rows to the client by transmitting them over the established connection. @@ -442,7 +442,7 @@ relations, a near-exhaustive search is conducted to find the best join sequence. The planner preferentially considers joins between any two relations for which there exist a corresponding join clause in the - <literal>WHERE</literal> qualification (i.e. for + <literal>WHERE</literal> qualification (i.e., for which a restriction like <literal>where rel1.attr1=rel2.attr2</literal> exists). Join pairs with no join clause are considered only when there is no other choice, that is, a particular relation has no available |