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Showing entries 1 to 30 of 405 Next 30 Older Entries

Displaying posts with tag: postgresql (reset)

ConFoo is looking for speakers
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ConFoo is currently looking for web professionals with deep understanding of PHP, Java, Ruby, Python, DotNet, HTML5, Databases, Cloud Computing, Security and Mobile development to share their skills and experience at the next ConFoo. Submit your proposals between August 25th and September 22nd.

ConFoo is a conference for developers that has built a reputation as a prime destination for exploring new technologies, diving deeper into familiar topics, and experiencing the best of community and culture.

  • ConFoo 2015 will be hosted on February 18-20 in Montreal, at the Hilton Bonaventure Hotel.
  • We take good care of our speakers by covering most expenses including travel, accommodation, lunch, full conference ticket, etc.
  • Presentations are 35min + 10min for questions, and may be delivered in
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On PostgreSQL. Interview with Bruce Momjian.
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“There are four things that motivate open source development teams:
1. The challenge/puzzle of programming, 2. Need for the software, 3. Personal advancement, 4. Belief in open source”
— Bruce Momjian.

On PostgreSQL and the challenges of motivating and managing open source teams, I have interviewed Bruce Momjian, Senior Database Architect at EnterpriseDB, and Co-founder of the PostgreSQL Global Development Group and Core Contributor.

RVZ

Q1. How did you manage to transform PostgreSQL from an abandoned academic project into a commercially viable, now enterprise relational database?


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Eventual consistency of NoSQL marketing
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Yesterday I learnt an important lesson about an important difference between NoSQL and MySQL, at least when it comes to the marketing and hype.

I saw a tweet from around marketing of one of NoSQL leaders:

Most people apparently would just conclude from the tweet's text, however I actually clicked the link, and couldn't believe eyes:

I guess that in NoSQL, when it comes to the integrity of data as well as hype - it is eventually consistent...



PostgreSQL Install-Windows
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A number of folks have asked me to create a post of a PostgreSQL installation on Windows. So, here is my step-by-step PostgreSQL 9.3 installation.

Download PostgreSQL Database

You can start the download of PostgreSQL from this site. It leads you to the EnterpriseDB site, where you can download the prepackaged software.

Install PostgreSQL 9.3 on Windows

These steps walk you through installing PostgreSQL and the the pgJDBC v9.3, psqlODBC (32 bit), and psqlODBC (64 bit) packages.

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Why Aren't All Data Immutable?
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Over the last few years there has been an increasing interest in immutable data management. This is a big change from the traditional update-in-place approach many database systems use today, where new values delete old values, which are then lost. With immutable data you record everything, generally using methods that append data from successive transactions rather than replacing them.  In some DBMS types you can access the older values, while in others the system transparently uses the old values to solve useful problems like implementing eventual consistency.

Baron Schwartz recently pointed out that it can be hard to get decent transaction processing performance based on append-only methods like append-only B-trees.  This is not a very strong argument

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ConFoo 2014 is at our door steps
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ConFoo, the conference for web developers, is hosting its fifth edition. It will take place in Montreal at the Hilton Bonaventure on February 26th – 28th. These five days are packed with great technical talks and semi-private trainings on your favorite technologies.

It’s definitely a conference for IT professionals, wether you are a developer, integrator or project manager. With its 150 talks, you are sure to find a presentation that will help you grow your core skills. Among them you can find :

  • Mobile development
  • Cloud computing
  • Project management
  • Databases and big data
  • Development with PHP, Ruby, Java, DotNet, Python and Javascript
  • Web security

Meet the experts who crafted your

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Will AWS plans for PostgreSQL RDS help it finally pick up?
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"Amazon to add Postgres to its most-favored database list" says GigaOM:
http://gigaom.com/2013/11/12/amazon-to-add-postgres-to-its-most-favored-database-list/
"To many this is no-brainer. Amazon wants to support the databases that its developer audiences want to use. This is simply a  case of Amazon responding to user demand and oh-by-the-way making its cloud infrastructure more attractive to a specific target audience. Some say Postgres has gained traction since Oracle’s acquisition of MySQL via its Sun buyout a few years back."

Some people I know said "yea, the writing was on the wall...". Well, was it?? Really? 
AWS finally got the time to "plan" for supporting Postgres now? After supporting MySQL, Oracle


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ConFoo: The conference for web developers is looking for speakers.
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ConFoo is currently looking for web professionals with deep understanding of PHP, Java, Ruby, Python, DotNet, HTML5, Databases, Cloud Computing, Security and Mobile development to share their skills and experience at the next ConFoo. Submit your proposals between August 26th and September 22nd.

ConFoo is a conference for developers that has built a reputation as a prime destination for exploring new technologies, diving deeper into familiar topics, and experiencing the best of community and culture.

  • ConFoo 2014 will be hosted on February 26-28 in Montreal, at the Hilton Bonaventure Hotel.
  • We take good care of our speakers by covering most expenses
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Public DNS resolve for VM instances hosted at OpenStack nova compute grizzly edition
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Issue – the OpenStack instances hostnames are not resolved at the moment by their floating IPs.

Fast solution – use PowerDNS
Short story:
1. Boot an instance , assign it a floating IP, open tcp ports 22 8001 and udp port 53.
2. Install PowerDNS, the particular yum package is named pdns.
3. install the mysql backend for PowerDNS, its available as yum package as well.
4. Install MariaDB , set the proper configuration, the initialize it at the default location.
5. Set the pdns user, create the pdns database and create the tables needed.
6. Configure the pdns service to use the gmysql backend.
7. Create and user at the OpenStack MySQL able to connect from the floating IP subnet.
8. Grant that user select permissions on all nova.* tables.
9. At the PowerDNS









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On PostgreSQL. Interview with Tom Kincaid.
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“Application designers need to start by thinking about what level of data integrity they need, rather than what they want, and then design their technology stack around that reality. Everyone would like a database that guarantees perfect availability, perfect consistency, instantaneous response times, and infinite throughput, but it´s not possible to create a product with [...]
Slides from Spatial functions in MySQL 5.6, MariaDB 5.5, PostGIS 2.0 and others at Percona Live
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Slides from my Percona Live talk evaluating the new spatial features in MySQL 5.6 and MariaDB 5.5 are now online. This is new material I have never presented before. It is based on work I have done in my job at Nokia HERE.com location services. So even if at this conference it draws less attention than my HA talks, it is actually what I'm most proud of to present.

TL;DR summary is that PostgreSQL has lots of features but MySQL has much better ease of use and performance. (I copy paste this standard sentence into any PostgreSQL vs MySQL evaluation I do :-) The MongoDB info is basically outdated, as the new 2.4 release introduces completely new implementation based on GeoJSON, new indexing, neither of which I tested.

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New translations of High Performance MySQL
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High Performance MySQL, 3rd Edition has been selling very well. It’s translated into many languages. O’Reilly sends me a hard-copy of the translations, and I have a whole section on my bookshelf dedicated to them. It’s really satisfying to look at it.

Today I’m happy to announce that we’re moving forward with a new batch of translations. Demand has been so strong that we want to make the book accessible to as wide an audience as possible. Plus, I get a fat check every time O’Reilly sells the translation rights.

The new languages will include Australian, l337 (“Leet”), Jive, Ebonics, Elmer Fudd, Blissymbols, and Esperanto. Here’s a sample before-and-after paragraph:

Isolating

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Multi-master data conflicts - Part 2: dealing with conflicts
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In the first part of this article we examined the types of conflicts and their causes. In this part, we will analyse some of the methods available to deal with conflicts.

Pessimistic locking (or: conflicts won't happen)

Applicability: synchronous clusters with 2pc

We've covered this topic in the previous article, but it's worth repeating. If you use a synchronous cluster, you don't have conflicts. For example, MySQL Cluster ensures consistent data with updates coming from different nodes. However, MySQL Cluster is not a replacement for a MySQL server, and it has severe limitations.


Optimistic locking

Applicability: synchronous clusters without 2pc (Galera)

Conflicting transactions proceed on different


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Which is bigger: MySQL or PostgreSQL?
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From my previous posts, we have some numbers (excluding NDB) for the size of MySQL, so what about PostgreSQL? Here, I used PostgreSQL git trunk and classing things in the contrib/ directory as plugins. I put the number of lines of code in the src/backend/storage directory down as storage engines LoC but did not count it as non-kernel code.

Version Total LoC Plugin LoC Storage Engines LoC Remaining (kernel) MySQL 5.5.30 858,441 2,706 171,009 684,726 (79% kernel) MySQL 5.6.10 1,049,344 29,122 236,067 784,155 (74% kernel) MariaDB 5.5 1,142,118 11,781 304,015 826,322 (72% kernel) Drizzle trunk 334,810 31,150 130,727 172,933 (51% kernel) PostgreSQL trunk 648,691 61,934 17,802 586,757  [Read more...]
Data Fabric Design Patterns: Fabric Connector
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This article is the third in a series on data fabric design and introduces the fabric connector service design pattern.  The previous article in this series introduced the transactional data service design pattern, which defines individual data stores and is the building block for data fabrics based on SQL databases.  The fabric connector builds on transactional data services and is another basic building block of fabric architecture.

Description and Responsibilities
Fabric connectors make a collection of DBMS servers look like a single server.  The fabric connector presents what appears to be a data service API to applications.  It


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The Data Day, Two days: February 7/8 2013
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Teradata results. Funding for DataXu. The chemistry of data. And more.

For 451 Research clients: Oracle launches major update to MySQL open source database bit.ly/TSONAt

— Matt Aslett (@maslett) February 8, 2013

For 451 clients: Analyzing the chemistry of data bit.ly/TSOV2R By @451wendy Treating sensitive data like dangerous chemicals

— Matt Aslett (@maslett) February 8, 2013

Teradata: Q4 net income $112m on revenue up 10% to $740m, FY net income $419m on revenue up 13% to $2.7bn. bit.ly/14FNS8L

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Data Fabric Design Patterns: Transactional Data Service
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This article is the second in a series on data fabric design and introduces the transactional data service design pattern.  The previous article in this series introduced data fabrics, which are collections of off-the-shelf DBMS servers that applications can connect to like a single server.  They are implemented from data fabric design patterns, which are reusable arrangements of DBMS servers, replication, and connectivity.  With this article we begin to look at individual design patterns in detail.

Description and Responsibilities
The transactional data service is a basic building block of data fabric architectures.  A transactional data service is a DBMS server that processes transactions submitted by applications and stores data safely.


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Introducing Data Fabric Design for Commodity SQL Databases
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Extract from THE SCALE-OUT BLOG by Robert Hodges (CEO, Continuent)http://scale-out-blog.blogspot.com Data management is undergoing a revolution. Many businesses now depend on data sets that vastly exceed the capacity of DBMS servers. Applications operate 24x7 in complex cloud environments using small and relatively unreliable VMs. Managers need to act on new information from those systems in
Introducing Data Fabric Design for Commodity SQL Databases
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Data management is undergoing a revolution.  Many businesses now depend on data sets that vastly exceed the capacity of DBMS servers.  Applications operate 24x7 in complex cloud environments using small and relatively unreliable VMs.  Managers need to act on new information from those systems in real-time. Users want constant and speedy access to their data in locations across the planet.

It is tempting to think popular SQL databases like MySQL and PostgreSQL have no place in this new world.  They manage small quantities of data, lack scalability features like parallel query, and have weak availability models.  One reaction is to discard them and adopt alternatives like Cassandra or MongoDB.  Yet open source SQL databases have tremendous strengths:  simplicity, robust transaction support, lightning fast operation, flexible

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Postgres XC - explained
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Postgres XC explained 

Users demand faster processing and as the processing and reports get faster so do the expectation for even faster performance and scalability. Now days its unthinkable not to deliver the performance  and availability.
All of those challenges require a constant search/development of new and improves solutions. Enter Postgres XC just when you were thinking that RDBMS is dead it comes back with the vengeance. So what is exactly Postgres XC and why should anyone care? 
Postgres XC shares a common name with the Postgres RDBMS but this is where the similarities stop, Postgres

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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 just 15 questions to answer, spread over five pages, and the entire survey should take less than ten minutes to complete.

All individual responses are of course

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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.  This article and others like it miss the point of what is happening to MySQL and its users.

Let's start by disproving that the notion that the MySQL community is

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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 Callaghan points out that MySQL - while it does create indexes automatically for foreign keys - actually has the same problems with the query plan as Postgres has in this post. See comments for details.)

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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 advice on how to write proposals.

The call for papers is public, meaning that all proposals get published on the website for others to

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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 was with Hana, and Ralf Gebhart who is also now with SkySQL but was not at Froscon. While Ralf was there only that first time to teach me how to be a Sales Engineer, with Hana we then continued to sell MySQL into telecom companies

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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. The following points are however worth noting:

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Showing entries 1 to 30 of 405 Next 30 Older Entries

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