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Andrew Tridgell 3e2c696e45 r18866: Jeremy and Volker have given the go-ahead on the group mapping ldb
code. Yay!

This first commit copies lib/ldb/ from Samba4. A huge congratulations
should go to Simo on this - he has put an enormous amount of work into
ldb, and it's great to see it go into the Samba3 tree.
(This used to be commit bbedf2e34315f5c420a3a05dfe22b1d5cf79f042)
2007-10-10 12:14:36 -05:00

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trees.ps contains an explanation of the Genealogical Representation of Trees
in Databases which is being used in ldb_sqlite3. Note that we use fgID
representation with 4 bytes per level, so we can represent 6.5E+08 subclasses
of any object class. This should be adequate for our purposes. :-)
The following document is the primary basis for the schema currently being
used here: http://www.research.ibm.com/journal/sj/392/shi.html