This assignment primarily dealt with Bitmap Indexes from a table whose fields consists of an Animal Type, Animal Age and Animal Adopted. The Type and Adopted field was converted to a grey code, while the Age field was converted in groups of 10 via binning.
The data output was not binary, instead our assignment required us to output as the character one and zero (ie. ‘1’ and ‘0’ respectively) aiding in debugging visually. With minor changes to the bitmap code, it can be a true bitmap. Our bitmap data was aligned to optimize compression along the table’s columns. In the case of our schema, the uncompressed bitmap was comprised of 16 lines of text with the column width of the file equal to the number of entries in the table.
Python 3
animals.txt and animals_test.txt are the datafiles that can be processed
./bitmap.py animals.txtor
python3 bitmap.py animals_test.txtCode Cleanup, added documents, and added files - June 13, 2018