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  licence:: BSD-like (depends on mxDateTime, which may be GPL-incompatible)   licence:: BSD-like

PostgreSQL

URL

http://www.postgresql.org/

licence
BSD
platforms

Unix, win32 ([http://www.postgresql.org/docs/faqs.FAQ_MINGW.html NT-based Microsoft operating system])

Pros

From the [http://www.postgresql.org/about/ features page]:

  • Good compliance with SQL standards
  • Supports many SQL features
    • Foreign keys
    • Implements all SQL99 join types: inner join, left, right, full outer join, natural join
    • Subqueries
    • UNION and UNION ALL, INTERSECT and EXCEPT
    • Views
    • Triggers
  • Support for international character sets, multibyte character encodings, Unicode
  • Supports many languages for writing server-side functions/procedures and aggregates: Python, C, Perl, Tcl, PL/PgSQL, ...
  • ACID compliant
  • Support for rollback
  • Serializable transaction isolation
  • Multi-Version Concurrency Control (MVCC) for highly scalable concurrent applications

Cons

  • Native Windows version is implemented in the PostgreSQL 8.x version, and just for Windows NT 4.0 / 2000 / XP / 2003. For running on other Windows platform or an older version than 8.0 there is a Cygwin version.


DB API 2.0 Drivers

PyGreSQL

URL

http://www.pygresql.org/

licence
BSD-like
platforms
Unix, win32
Python versions
1.5.2 thru 2.4
Maintenance
Last version released is 3.8.1 (2006-06-05)

Now incorporates PoPy - see http://zope.org/Members/tm/Full_Announce

psycopg

URL

http://initd.org/software/initd/psycopg

Licence
GPL
Platforms
Unix, win32 (beta)
Python versions
Maintenance
Active development, frequent updates (as of 10/2003)

Extensions to DB API

  • dictfetchone(), dictfetchmany(), dictfechall() methods on the cursor object; these will return dictionaries instead of tuples, so you can access rows by name instead of by index

Comments

pyPgSQL

URL

http://pypgsql.sourceforge.net

Licence
BSD-like (depends on mxDateTime, which may be GPL-incompatible)
Platforms
Unix, win32
Python versions
2.1 thru 2.3
Maintenance
Active, sporatic (as of 10/2003)

Extensions to DB API

  • The fetch methods on cursors return an instances of PgResultSet, which you can use to access rows by index (like in DB-API), dictionary-like or with attributes. This feature can be turned off for a slight performance boost.

  • Support for PostgreSQL notifications in the low-level API.

mxODBC

URL

http://www.egenix.com/products/python/mxODBC/

Licence
eGenix Commercial License
Platforms
Windows, Linux, MacOS X, FreeBSD, Solaris, AIX
Python versions
2.1 - 2.5

mxODBC is compatible with the [http://www.postgresql.org/ftp/odbc/versions/ PostgreSQL ODBC driver] on Windows and Unix.


Supported Python Applications

  • ["Zope"]
  • DbDoc

  • three PostgreSQL drivers (using pgdb, included with the PostgreSQL distro, pypgsql, and psycopg) exist for ["PyDO"] (Python Data Objects)

PostgreSQL (last edited 2021-03-31 06:49:56 by TonyLocke)

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