Trash

gistfile1.txt

As I discussed last time (msdn.microsoft.com/magazine/JJ553519), Cassandra is a “column-oriented” data store, which means that instead of storing identically structured tuples of data arranged according to a fixed structure (the table schema), Cassandra stores “column families” in “keyspaces.” In more descriptive terms, Cassandra associates a key value with a varying number of name/value pairs (columns) that might be entirely different from one “row” to another.


db.collection.find({}).sort($natural: -1}).limit(1);

http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/video-lectures/