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Diffstat (limited to 'Doc/lib/libbsddb.tex')
| -rw-r--r-- | Doc/lib/libbsddb.tex | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/Doc/lib/libbsddb.tex b/Doc/lib/libbsddb.tex index a5cda6d..44b9168 100644 --- a/Doc/lib/libbsddb.tex +++ b/Doc/lib/libbsddb.tex @@ -13,23 +13,29 @@ using the appropriate open call. Bsddb objects behave generally like dictionaries. Keys and values must be strings, however, so to use other objects as keys or to store other kinds of objects the user must serialize them somehow, typically using \function{marshal.dumps()} or -\function{pickle.dumps}. +\function{pickle.dumps()}. The \module{bsddb} module requires a Berkeley DB library version from 3.3 thru 4.4. \begin{seealso} - \seeurl{http://pybsddb.sourceforge.net/}{Website with documentation - for the new python Berkeley DB interface that closely mirrors the - sleepycat object oriented interface provided in Berkeley DB 3 and 4.} + \seeurl{http://pybsddb.sourceforge.net/}{The website with documentation + for the \module{bsddb.db} python Berkeley DB interface that closely mirrors + the Sleepycat object oriented interface provided in Berkeley DB 3 and 4.} \seeurl{http://www.sleepycat.com/}{Sleepycat Software produces the - modern Berkeley DB library.} + Berkeley DB library.} \end{seealso} +A more modern DB, DBEnv and DBSequence object interface is available in the +\module{bsddb.db} module which closely matches the Sleepycat Berkeley DB C API +documented at the above URLs. Additional features provided by the +\module{bsddb.db} API include fine tuning, transactions, logging, and +multiprocess concurrent database access. + The following is a description of the legacy \module{bsddb} interface -compatible with the old python bsddb module. For details about the more -modern Db and DbEnv object oriented interface see the above mentioned -pybsddb URL. +compatible with the old python bsddb module. Starting in Python 2.5 this +interface should be safe for multithreaded access. The \module{bsddb.db} +API is recommended for threading users as it provides better control. The \module{bsddb} module defines the following functions that create objects that access the appropriate type of Berkeley DB file. The @@ -88,7 +94,7 @@ interpretation. \begin{notice} -Beginning in 2.3 some Unix versions of Python may have a \module{bsddb185} +Beginning in 2.3 some \UNIX{} versions of Python may have a \module{bsddb185} module. This is present \emph{only} to allow backwards compatibility with systems which ship with the old Berkeley DB 1.85 database library. The \module{bsddb185} module should never be used directly in new code. |