fcf98f7079
PR: 230289 Submitted by: Yasuhiro KIMURA <yasu@utahime.org> (initial revision) meta (myself) Reviewed by: sunpoet, ruby Approved by: sunpoet Differential Revision: https://reviews.freebsd.org/D20000
24 lines
924 B
Text
24 lines
924 B
Text
The DBM class provides a wrapper to a Unix-style Database Manager
|
|
library.
|
|
|
|
Dbm databases do not have tables or columns; they are simple key-value
|
|
data stores, like a Ruby Hash except not resident in RAM. Keys and
|
|
values must be strings.
|
|
|
|
The exact library used depends on how Ruby was compiled. It could be
|
|
any of the following:
|
|
|
|
* The original ndbm library is released in 4.3BSD. It is based on dbm
|
|
library in Unix Version 7 but has different API to support multiple
|
|
databases in a process.
|
|
* Berkeley DB versions 1 thru 6, also known as BDB and Sleepycat DB,
|
|
now owned by Oracle Corporation.
|
|
* Berkeley DB 1.x, still found in 4.4BSD derivatives (FreeBSD,
|
|
OpenBSD, etc).
|
|
* GDBM, the GNU implementation of dbm.
|
|
* QDBM, another open source reimplementation of dbm.
|
|
|
|
All of these dbm implementations have their own Ruby interfaces
|
|
available, which provide richer (but varying) APIs.
|
|
|
|
WWW: https://github.com/ruby/dbm
|