Changeset 34243 in project


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Timestamp:
08/01/17 16:40:06 (5 months ago)
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svnwiki
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Anonymous wiki edit for IP [70.123.118.182]: Joint Database Technology changes/additions

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  • wiki/eggref/4/sdbm

    r34242 r34243  
    2121simple key-value store for non-critical applications.
    2222
    23 === Joint Database Technology - SDBM databases used for persistent indexing to Flat File Database fixed-length records, where the KEY is one or more fields (or partial fields) within the fixed-length records, and the VALUE is the byte offset (to position the file pointer for read/write operations) relative to either the TOP (pos/+ offset) or END (neg/- offset) of file.
     23=== Joint Database Technology - SDBM databases of key/value pairs (tied to program hash tables) used for persistent random access indexing to Flat File Database fixed-length records, where the KEY is one or more fields (or partial fields) within the fixed-length records, and the VALUE is the byte offset (to position the file pointer for read/write operations) relative to either the TOP (pos/+ offset) or END (neg/- offset) of file. Multiple SDBM files can be used for Primary and Alternate indexing. Alternate Indexing with Duplicates can also be implemented by added a unique sequence number to the KEY for each duplicate instance.
    2424
    2525GO TO: [ https://en.wikipedia.org/wiki/Dbm ]  for further details
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