HBase and bigtable are referred to column-stores, but we arent a 'column oriented dbms' as described in the wikipedia.
At the storage level, hbase stores key-values, where the key is a triple of row / column / timestamp. Files are ordered lists of these key/values, and they are sorted in that order, hence rows are stored together, then sorted by column then reverse by timestamp (newest on top). Thus hbase is not a 'column store' in the sense listed in the wikipedia entry. On Thu, Jul 30, 2009 at 11:23 PM, Angus He<[email protected]> wrote: > Why don't you try to google it first? > After googling with the keyword "Column-oriented", the first result is > exactly what you want. > http://en.wikipedia.org/wiki/Column-oriented_DBMS > > > > 2009/7/31 <[email protected]>: >> Hi, >> Does anyone can tell me the benefit of Column-oriented data modal? >> Thank you >> >> Fleming >> 宏明 >> --------------------------------------------------------------------------- >> TSMC PROPERTY >> This email communication (and any attachments) is proprietary information >> for the sole use of its >> intended recipient. Any unauthorized review, use or distribution by anyone >> other than the intended >> recipient is strictly prohibited. If you are not the intended recipient, >> please notify the sender by >> replying to this email, and then delete this email and any copies of it >> immediately. Thank you. >> --------------------------------------------------------------------------- >> >> >> >> > > > > -- > Regards > Angus >
