Comments on: On the evolution of “non-relational databases”. http://www.odbms.org/blog/2009/11/on-evolution-of-non-relational/ Trends and Information on New Data Management Technologies, Innovation. Sat, 04 Feb 2012 22:54:13 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: Roland Bouman http://www.odbms.org/blog/2009/11/on-evolution-of-non-relational/comment-page-1/#comment-2 Roland Bouman Fri, 18 Dec 2009 07:13:52 +0000 http://www.odbms.org/odbmsblog/2009/11/25/on-the-evolution-of-non-relational-databases/#comment-2 I'd like to add two things:<br /><br />1) IMO, "NoSQL" is more than being merely non-relational. It is true that being non-relational is a defining characteristic of "NoSQL", but a very import additional characteristic that is present in all DBMS-es I heard of that are labelled "NoSQL", is the ability to participate in a cluster - i.e. these solutions are all inherently designed to build distributed datastores.<br /><br />2) It's not just a matter of IO bottlenecks in retrieving data, or volume constraints in storing it in a single instance. The distributed architecture sort of naturally calls for parallel query execution, which is very important from a performance perspective.<br /><br />kind regards,<br /><br />Roland Bouman I'd like to add two things:

1) IMO, "NoSQL" is more than being merely non-relational. It is true that being non-relational is a defining characteristic of "NoSQL", but a very import additional characteristic that is present in all DBMS-es I heard of that are labelled "NoSQL", is the ability to participate in a cluster – i.e. these solutions are all inherently designed to build distributed datastores.

2) It's not just a matter of IO bottlenecks in retrieving data, or volume constraints in storing it in a single instance. The distributed architecture sort of naturally calls for parallel query execution, which is very important from a performance perspective.

kind regards,

Roland Bouman

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