mirror of https://git.FreeBSD.org/ports.git
23 lines
890 B
Plaintext
23 lines
890 B
Plaintext
The DBM class provides a wrapper to a Unix-style Database Manager
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library.
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Dbm databases do not have tables or columns; they are simple key-value
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data stores, like a Ruby Hash except not resident in RAM. Keys and
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values must be strings.
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The exact library used depends on how Ruby was compiled. It could be
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any of the following:
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* The original ndbm library is released in 4.3BSD. It is based on dbm
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library in Unix Version 7 but has different API to support multiple
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databases in a process.
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* Berkeley DB versions 1 thru 6, also known as BDB and Sleepycat DB,
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now owned by Oracle Corporation.
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* Berkeley DB 1.x, still found in 4.4BSD derivatives (FreeBSD,
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OpenBSD, etc).
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* GDBM, the GNU implementation of dbm.
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* QDBM, another open source reimplementation of dbm.
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All of these dbm implementations have their own Ruby interfaces
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available, which provide richer (but varying) APIs.
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