Comments on: NoSQL? http://www.dbms2.com/2009/07/01/nosql-sql-alternative/ Choices in data management and analysis Mon, 01 Mar 2010 19:09:32 -0500 http://wordpress.org/?v=2.8.4 hourly 1 By: El movimiento en contra de las BBDD : : DESARROLLOAGIL http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-160754 El movimiento en contra de las BBDD : : DESARROLLOAGIL Mon, 01 Mar 2010 07:13:24 +0000 http://www.dbms2.com/?p=827#comment-160754 [...] pesar de todo el potencial, la mayoría de las organizaciones todavía no necesitan preocuparse por lo que se pierden, dice [...] [...] pesar de todo el potencial, la mayoría de las organizaciones todavía no necesitan preocuparse por lo que se pierden, dice [...]

]]> By: Relevance in the datacenter « JZ Talk Blogger http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-156320 Relevance in the datacenter « JZ Talk Blogger Thu, 21 Jan 2010 07:16:53 +0000 http://www.dbms2.com/?p=827#comment-156320 [...] in the datacenter Do you know SQL or do you NoSQL? MySQL has been very popular for internet-scale deployments. But times have changed and there are [...] [...] in the datacenter Do you know SQL or do you NoSQL? MySQL has been very popular for internet-scale deployments. But times have changed and there are [...]

]]> By: Nati Shalom http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-152487 Nati Shalom Sat, 12 Dec 2009 22:51:43 +0000 http://www.dbms2.com/?p=827#comment-152487 There are few other points that may explain the rational behind the NOSQL movement. * Actual disk failure/year is 3% (vs. estimates of 0.5 - 0.9%) – this is a 600% difference on reported vs. actual disk failure. * There is NO correlation between failure rate and disk type – whether it is SCSI, SATA, or fiber channel. * There is NO correlation between high disk temperature and failure rates Those analysis shows that the approach of relying on a shared storage for reliability as with most RAC clusters is broken. Instead NOSQL approach assumes that failure are inevitable and where designed to deal with those failure under extreme scenarios. I summarized that topic on one of my recent post: Why Existing Databases (RAC) are So Breakable!: http://natishalom.typepad.com/nati_shaloms_blog/2009/11/why-existing-databases-rac-are-so-breakable.html There are few other points that may explain the rational behind the NOSQL movement.

* Actual disk failure/year is 3% (vs. estimates of 0.5 – 0.9%) – this is a 600% difference on reported vs. actual disk failure.
* There is NO correlation between failure rate and disk type – whether it is SCSI, SATA, or fiber channel.
* There is NO correlation between high disk temperature and failure rates

Those analysis shows that the approach of relying on a shared storage for reliability as with most RAC clusters is broken. Instead NOSQL approach assumes that failure are inevitable and where designed to deal with those failure under extreme scenarios.

I summarized that topic on one of my recent post: Why Existing Databases (RAC) are So Breakable!:
http://natishalom.typepad.com/nati_shaloms_blog/2009/11/why-existing-databases-rac-are-so-breakable.html

]]> By: NoSQL Q and A | DBMS2 -- DataBase Management System Services http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-152421 NoSQL Q and A | DBMS2 -- DataBase Management System Services Sat, 12 Dec 2009 04:17:24 +0000 http://www.dbms2.com/?p=827#comment-152421 [...] Avoiding joins is a big deal because a lot of programmers didn’t learn SQL in school. Also, joins can be computationally expensive. I wrote about some of the problems with fixed schemas here and, specifically in connection with NoSQL, here. [...] [...] Avoiding joins is a big deal because a lot of programmers didn’t learn SQL in school. Also, joins can be computationally expensive. I wrote about some of the problems with fixed schemas here and, specifically in connection with NoSQL, here. [...]

]]> By: Damián Digital » Archivo » NoSQL: el movimiento en contra de las bases de datos http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-147478 Damián Digital » Archivo » NoSQL: el movimiento en contra de las bases de datos Mon, 02 Nov 2009 20:09:36 +0000 http://www.dbms2.com/?p=827#comment-147478 [...] pesar de todo el potencial, la mayoría de las organizaciones todavía no necesitan preocuparse por lo que se pierden, dice [...] [...] pesar de todo el potencial, la mayoría de las organizaciones todavía no necesitan preocuparse por lo que se pierden, dice [...]

]]> By: NoSQL Movement is Gaining Traction | Software News Daily http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-140521 NoSQL Movement is Gaining Traction | Software News Daily Wed, 16 Sep 2009 17:56:19 +0000 http://www.dbms2.com/?p=827#comment-140521 [...] work with relational databases and they have no reason to change that at the moment. An article on Monash from yesterday lays out both sides of this argument and makes some good [...] [...] work with relational databases and they have no reason to change that at the moment. An article on Monash from yesterday lays out both sides of this argument and makes some good [...]

]]> By: Dinar http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-132559 Dinar Sat, 25 Jul 2009 10:22:08 +0000 http://www.dbms2.com/?p=827#comment-132559 Guy Bayes:"Kurt, we agree, poor choice of names on their part :) http://nosql.eventbrite.com/" yes, this is called NoSQL, but it is like about non-relational databases, not about not using SQL: http://nosql.eventbrite.com/ :'This meetup is about "open source, distributed, non relational databases". Have you run into limitations with traditional relational databases?', http://blog.oskarsson.nu/2009/06/nosql-debrief.html :'The idea was to give attendees a solid introduction to how distributed, non relational databases work as well as an overview of the various projects out there.'. What about whether SQL language is really needed to use with relational databases? And i thought this way: Curt Monash: "You just like to program, and want to manipulate stored data the same way you do anything else. ..." and "You lack familiarity with SQL." i have asked about that in #php irc channel and have published the talk: http://qdb.wp.kukmara.ru/2009/07/15/is-sql-language-really-needed-to-c-like-language-to-work-with-db/ - and there are some c-like syntax instead of SQL. Guy Bayes:”Kurt, we agree, poor choice of names on their part :)
http://nosql.eventbrite.com/”
yes, this is called NoSQL, but it is like about non-relational databases, not about not using SQL: http://nosql.eventbrite.com/ :’This meetup is about “open source, distributed, non relational databases”.
Have you run into limitations with traditional relational databases?’, http://blog.oskarsson.nu/2009/06/nosql-debrief.html :’The idea was to give attendees a solid introduction to how distributed, non relational databases work as well as an overview of the various projects out there.’.
What about whether SQL language is really needed to use with relational databases?
And i thought this way:
Curt Monash: “You just like to program, and want to manipulate stored data the same way you do anything else. …” and “You lack familiarity with SQL.”
i have asked about that in #php irc channel and have published the talk: http://qdb.wp.kukmara.ru/2009/07/15/is-sql-language-really-needed-to-c-like-language-to-work-with-db/ – and there are some c-like syntax instead of SQL.

]]> By: cruppstahl’s blog » NoSQL Databases gaining momentum http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-131049 cruppstahl’s blog » NoSQL Databases gaining momentum Fri, 17 Jul 2009 12:13:12 +0000 http://www.dbms2.com/?p=827#comment-131049 [...] And from the other side - Curt Monash on NoSQL (BI point of view): http://www.dbms2.com/2009/07/01/nosql-sql-alternative/ [...] [...] And from the other side – Curt Monash on NoSQL (BI point of view): http://www.dbms2.com/2009/07/01/nosql-sql-alternative/ [...]

]]> By: Curt Monash http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-129681 Curt Monash Thu, 09 Jul 2009 01:26:10 +0000 http://www.dbms2.com/?p=827#comment-129681 Avi, I've long been with you on that one. :) http://www.dbms2.com/2005/12/09/relational-dbms-versus-text-data/ That said, I once tried to build a start-up around Oracle's text search, especially from 7.3.2 to 8.0.4 Whoops ... Avi,

I’ve long been with you on that one. :)

http://www.dbms2.com/2005/12/09/relational-dbms-versus-text-data/

That said, I once tried to build a start-up around Oracle’s text search, especially from 7.3.2 to 8.0.4 Whoops …

]]> By: Avi Rappoport, SearchTools http://www.dbms2.com/2009/07/01/nosql-sql-alternative/comment-page-1/#comment-129679 Avi Rappoport, SearchTools Thu, 09 Jul 2009 01:03:09 +0000 http://www.dbms2.com/?p=827#comment-129679 I do a lot with full-text search and that is a case where it just doesn't match the architecture of SQL-oriented DBMSs. Most of the content is unstructured and almost all that is tagged or fielded is text rather than numeric. Inverted indexes are hugely more efficient for fast lookup than anything else, and the transaction code in DBMS is enough of an overhead to kill performance. Sure, there have been SQL-like query languages, but for the raw work of keyword search, SQL just doesn't work. (And if you want to get me really ranting, let me tell you about the so-called MySQL full-text search, it strinks.) I do a lot with full-text search and that is a case where it just doesn’t match the architecture of SQL-oriented DBMSs. Most of the content is unstructured and almost all that is tagged or fielded is text rather than numeric. Inverted indexes are hugely more efficient for fast lookup than anything else, and the transaction code in DBMS is enough of an overhead to kill performance. Sure, there have been SQL-like query languages, but for the raw work of keyword search, SQL just doesn’t work. (And if you want to get me really ranting, let me tell you about the so-called MySQL full-text search, it strinks.)

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