Changeset 34498 in project


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Timestamp:
09/03/17 17:13:05 (3 months ago)
Author:
svnwiki
Message:

Anonymous wiki edit for IP [64.134.148.83]: changed link to Joint Database Technology

File:
1 edited

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  • wiki/eggref/4/sdbm

    r34247 r34498  
    2525SDBM 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 adding a unique sequence number to the KEY for each duplicate instance.  The separate, binary SDBM files (used for indexing) can easily be rebuilt from the data stored within the Flat File database(s).   
    2626
    27 GO TO: [ https://en.wikipedia.org/wiki/Dbm ]  for further details and code examples.
     27GO TO: [ http://www.perlmonks.org/?node_id=1121222 ]  for further details and code examples.
    2828
    2929=== Installation
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