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This is the TripleDB, a way of persistently remembering "triples" of data. Each entry is kind of a "subject-verb-object" set. For example, some entries might be: Noun Verb Object ========================================= File1 Length 1253254 File1 MimeType text/html File1 Author Ralph File2 Length 32542 File2 MimeType image/gif File2 Author Bertha This API is about storing, deleting, and querying such triples to a database. Each member of a triple can be a string, integer, or date. For more details, read the API, in tdbapi.h. Note that TripleDB now depends on the Sleepycat Berkeley DB, version 3.1.11 or greater. For more information on that, see http://www.sleepycat.com. FAQ: Q: "Hey! There's no Makefile!" A: Yeah, yeah, I know. This is developed as part of a project at work, and our Makefiles are all messed up. If you have one that fits in well with other stuff at mozilla.org, please feel free to contribute it. Q: Um, so nobody else here uses this? A: That's right. But this maps in pretty well to RDF, I believe. I wouldn't be surprised if someone decides to use it to store a biggish RDF database, and adds it to mozilla for that purpose. - Terry Weissman terry@mozilla.org