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Simon Riggs 722bf7017b Extend ALTER TABLE to allow Foreign Keys to be added without initial validation. 
FK constraints that are marked NOT VALID may later be VALIDATED, which uses an
ShareUpdateExclusiveLock on constraint table and RowShareLock on referenced
table. Significantly reduces lock strength and duration when adding FKs.
New state visible from psql.

Simon Riggs, with reviews from Marko Tiikkaja and Robert Haas
2011-02-08 12:23:20 +00:00
config Enable building with the Mingw64 compiler. 2011-01-30 19:56:46 -05:00
contrib Minor sepgsql regression test fixes. 2011-02-02 23:46:51 -05:00
doc Extend ALTER TABLE to allow Foreign Keys to be added without initial validation. 2011-02-08 12:23:20 +00:00
src Extend ALTER TABLE to allow Foreign Keys to be added without initial validation. 2011-02-08 12:23:20 +00:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
aclocal.m4
configure Enable building with the Mingw64 compiler. 2011-01-30 19:56:46 -05:00
configure.in Use -Wformat-security when available 2011-01-27 01:23:48 +02:00
COPYRIGHT Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
GNUmakefile.in Improved parallel make support 2010-11-12 22:15:16 +02:00
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README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Changes between all PostgreSQL releases are recorded in the
file HISTORY.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.