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Displaying posts with tag: postgresql (reset)

Our 2013 Database survey is now live
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451 Research’s 2013 Database survey is now live at http://bit.ly/451db13 investigating the current use of database technologies, including MySQL, NoSQL and NewSQL, as well as traditional relation and non-relational databases.

The aim of this survey is to identify trends in database usage, as well as changing attitudes to MySQL following its acquisition by Oracle, and the competitive dynamic between MySQL and other databases, including NoSQL and NewSQL technologies.

There are …

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The MySQL Community: Beleaguered or Better than Ever?
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The  MariaDB Foundation announcement spawned some interesting commentary about the state of open source databases.  One recent headline cited the "beleaguered MySQL community." Beleaguered is a delightful adjective.  The OED tells us that it means beset, invested, or besieged.  Much as I like the word, I do not think it is an accurate or useful description of the MySQL community. …

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Distributed Clustering Services
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Apart from my consulting as part of ScaleIn, I also invest to bootstrap companies with really disruptive ideas; and in the process met few database specific companies who are already[...]

Typical “Big” Data Architecture
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Here is the typical “Big” data architecture, that covers most components involved in the data pipeline. More or less, we have the same architecture in production in number of places[...]

New Continuent Tungsten 1.5.3 now available
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We are pleased to inform you that the new Continuent Tungsten 1.5.3 is now available for download at wwww.continuent.com/software. This is a maintenance release that is recommended for all our customers, but is not considered a critical upgrade. Please contact us if you need consultative help with this upgrade.

This release is a 1.5 maintenance release which has been primarily aimed at

Hand holding PostgreSQL on a simple query
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With MySQL it was for a long time the case that a lot of sub queries would actually perform poorly, because of poor execution plans. (This is no longer the case in MariaDB 5.5 or the upcoming MySQL 5.6.) Because of this, any MySQL DBA knows the rule of thumb that sub-queries should basically be avoided and you can usually get the same result by using JOINs instead.

I've now learned why PostgreSQL DBAs like sub queries so much. PostgreSQL - being the most advanced open source database - apparently does the exact opposite optimizations as MySQL: it requires you to rewrite simple queries into complex subqueries to get what you want. (Update: Mark …

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ConFoo 2013: Call for Papers is Now Open!
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ConFoo is one of the most important web developer-oriented conferences. ConFoo 2013 will be held on February 25 through March 1 in Montreal, Canada.

We just opened call for papers and we are looking for the best PHP, Java, Ruby, DotNet,HTML5 experts who are willing to share their knowledge with the Canadian community. Candidates can submit proposals until September 23. Consult the call for papers page for details and to start submitting. That page also explains what expenses ConFoo can cover for speakers. You can also get …

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MySQL and PostgreSQL faces at Froscon
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My three previous blog posts I already wrote from Froscon. In this post I still want to go back and mention some people I met and discussions I had.

The MySQL side

There were of course many MySQL people, with both SkySQL and Oracle sponsoring. It was great to meet Carsten from Oracle, who has joined the MySQL Sales Engineer team in Europe (he moved from an OpenOffice position). That's my former team, so it was great to see a new face!

Going there the person I was most looking forward to meet was Hana Hütter, formerly a MySQL account manager for Central Europe, and now doing the same at SkySQL. My first ever MySQL sales gig …

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Comparing open source GIS implementations
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In my quest to understand spatial GIS functionality, I have come to the ultimate goal: evaluation the actual database products themselves.

PostgreSQL / PostGIS

PostGIS is a variant of PostgreSQL with spatial extensions. The main reason for maintaining the GIS feature set outside of PostgreSQL proper seems to be licensing: the spatial extensions are LGPL GPL licensed.

PostGIS is widely recognized as the most mature and feature-rich GIS implementation for SQL databases (and perhaps any database), matched only by the costly Spatial extension for the Oracle Enterprise database. (See comparisons in the links below.)

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The OpenGIS standard
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While the underlying index should be opaque to the user of a DBMS with spatial features, the API used to define spatial types and operate on them is of course more visible. The relevant standard in this space is often referred to as "OpenGIS", however the Open Geospatial Consortium in fact defines a long list of standards. The standard relevant to SQL databases is known more precisely as "OpenGIS Implementation Specification for Geographic information - Simple feature access - Part 2: SQL option" aka "Simple feature access".

It is not meaningful to recite the standard at length in my blog, my focus is instead on actual implementations that I will blog about later. …

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10 Newer Entries Showing entries 31 to 40 of 415 10 Older Entries

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