From cassandra-user-return-2825-apmail-incubator-cassandra-user-archive=incubator.apache.org@incubator.apache.org Mon Mar 01 21:52:14 2010 Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 37506 invoked from network); 1 Mar 2010 21:52:14 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 1 Mar 2010 21:52:14 -0000 Received: (qmail 31503 invoked by uid 500); 1 Mar 2010 21:52:12 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 31490 invoked by uid 500); 1 Mar 2010 21:52:12 -0000 Mailing-List: contact cassandra-user-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cassandra-user@incubator.apache.org Delivered-To: mailing list cassandra-user@incubator.apache.org Received: (qmail 31482 invoked by uid 99); 1 Mar 2010 21:52:12 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 01 Mar 2010 21:52:12 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of jbellis@gmail.com designates 209.85.219.210 as permitted sender) Received: from [209.85.219.210] (HELO mail-ew0-f210.google.com) (209.85.219.210) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 01 Mar 2010 21:52:04 +0000 Received: by ewy2 with SMTP id 2so1581330ewy.20 for ; Mon, 01 Mar 2010 13:51:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:content-type; bh=KB2/ah6S99YfIPinmoOA8+wSnAD+rMfhyDhZwzBX3Kw=; b=lpmgYo7MtpgpsJGB4ks7pTxZBFbe3feXd98W2lYxeTsz3SKmbTIDr0FkTIcX36OFr3 0OJrZUlZePn6waQ75AdtSBTzS08fIzB/m/td7P5MPZNO64zDraBO/W25pMOc0IUF2QY+ aNlif0vs6uPDBSNaTrbsglrbEveJER09yOTmM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; b=tP6AOhQeO7kyvvsXZv14H+D+ep8DyUnx+v0E2P+Qgs/oHSfU5WpK8gpetVo09jRliv iZlKxi0+jG8yz5zeDeNFfRIWk+i1NT7BgFLEKdlc97CWbw9xqJ7rkO2Iy3vrjxJRBPBZ 3zKxZcqCjS7z3rjt18S/KSTnH3StmShKopdi8= MIME-Version: 1.0 Received: by 10.216.88.148 with SMTP id a20mr3490617wef.124.1267480304193; Mon, 01 Mar 2010 13:51:44 -0800 (PST) In-Reply-To: <74f4d40b1003011349o1c92fd7bnf43db51714646a8f@mail.gmail.com> References: <1267439187400-4653418.post@n2.nabble.com> <1267443266550-4653644.post@n2.nabble.com> <74f4d40b1003011349o1c92fd7bnf43db51714646a8f@mail.gmail.com> From: Jonathan Ellis Date: Mon, 1 Mar 2010 15:51:24 -0600 Message-ID: Subject: Re: Is Cassandra a document based DB? To: cassandra-user@incubator.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org On Mon, Mar 1, 2010 at 3:49 PM, Erik Holstad wrote: > I think that there are people that would be of a different opinion here. > Cassandra has > as I've understood it table:key:name:val and in cases the val is a > serialized data structure. > In HBase you have table:row:family:key:val:version, which some people might > consider > richer. Neither is a superset of the other (C has supercolumns, H has versions) but IMO supercolumns are more frequently useful. :) -Jonathan