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Diffstat (limited to 'ldb/ldb_sqlite3/README')
| -rw-r--r-- | ldb/ldb_sqlite3/README | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ldb/ldb_sqlite3/README b/ldb/ldb_sqlite3/README new file mode 100644 index 00000000..6cda0a77 --- /dev/null +++ b/ldb/ldb_sqlite3/README @@ -0,0 +1,7 @@ +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 |