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How to decode a query on a composite unary-encoded attribute?
A good early paper on the topic of bitmap indexes is "Bit Transposed Files" by Wong et al, published in 1985.
In all the query-decoding examples, it is left to the reader to understand how each ...
5
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Cardinality rule for bitmap indexes
The Oracle documentation includes the following advice:
A bitmap index should be built on each of the foreign key columns of
the fact table or tables
In that reference, there is even a bitmap ...
