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  • ISV Exastack program: IBIS, Performix, Cardtek

    - by Javier Puerta
    Impact Business Information Solutions (IBIS) accelerates insights for Health Sciences decision-makers to achieve new levels productivity using Oracle’s extreme-performance system, Oracle Exadata Database Machine. Read More. Perfomix Inc Achieves Oracle Exadata Optimized Status. Read more. Cardtek Group Company SmartSoft's payment processing solution achieves Oracle Exadata Optimized status. Read more.

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  • A High Level Comparison Between Oracle and SQL Server

    Organisations often employ a number of database platforms in their information system architecture. It is not uncommon to see medium to large sized companies using three to four different RDBMS packages. Consequently the DBAs these companies look for often ... [Read Full Article]

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  • Help identify the pattern for reacting on updates

    - by Mike
    There's an entity that gets updated from external sources. Update events are at random intervals. And the entity has to be processed once updated. Multiple updates may be multiplexed. In other words there's a need for the most current state of entity to be processed. There's a point of no-return during processing where the current state (and the state is consistent i.e. no partial update is made) of entity is saved somewhere else and processing goes on independently of any arriving updates. Every consequent set of updates has to trigger processing i.e. system should not forget about updates. And for each entity there should be no more than one running processing (before the point of no-return) i.e. the entity state should not be processed more than once. So what I'm looking for is a pattern to cancel current processing before the point of no return or abandon processing results if an update arrives. The main challenge is to minimize race conditions and maintain integrity. The entity sits mainly in database with some files on disk. And the system is in .NET with web-services and message queues. What comes to my mind is a database queue-like table. An arriving update inserts row in that table and the processing is launched. The processing gathers necessary data before the point of no-return and once it reaches this barrier it looks into the queue table and checks whether there're more recent updates for the entity. If there are new updates the processing simply shuts down and its data is discarded. Otherwise the processing data is persisted and it goes beyond the point of no-return. Though it looks like a solution to me it is not quite elegant and I believe this scenario may be supported by some sort of middleware. If I would use message queues for this then there's a need to access the queue API in the point of no-return to check for the existence of new messages. And this approach also lacks elegance. Is there a name for this pattern and an existing solution?

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  • Celko's SQL Stumper: Eggs in one Basket

    Joe Celko returns with another stumper to celebrate Easter. Unsurprisingly, this involves eggs. More surprising is the nature of the puzzle: This time, the puzzle is one of designing a database rather than a query. DDL as well as the DML.

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  • Webcast - June 27th: Announcing Oracle SuperCluster T5-8: Our Fastest Engineered System

    - by Javier Puerta
    Join us for a live webcast with Oracle Executive Vice President, John Fowler, as he announces the new Oracle SuperCluster T5-8: Our Fastest Engineered System. Learn how the new Oracle SuperCluster T5-8 delivers: Extreme performance through Oracle Exadata, Oracle Exalogic, Oracle’s virtualization solutions, and the world’s fastest servers Highest availability with no single point of failure and 99.999% uptime Highest efficiency with unmatched price/performance and the lowest operating costs A complete engineered system ideal for database and application consolidation and private cloud Register here

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  • Google Maps Developers Live: Ships, Polylines, Symbols, Oh My!

    Google Maps Developers Live: Ships, Polylines, Symbols, Oh My! For the second part of our "A Journey of 245k Points" series, Paul shows some cool tricks for making stunning map visualizations of numerous ship voyages using polylines, making polylines interactive, and animating voyages with symbols. Data Source: CLIWOC (Climatological Database for the World's Oceans, 1750-1850): www.ucm.es From: GoogleDevelopers Views: 0 0 ratings Time: 30:00 More in Education

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  • How to explain bad software to non-technical people?

    - by mtutty
    In discussing software development with non-technical people (customers, business owners, project sponsors, etc.), I often resort to analogies and metaphors. It's relatively easy and effective to use a "house" or other metaphor for describing the size and complexity of new development. However, we often inherit someone else's code or data, and this approach doesn't seem to hold up as well when trying to explain why we're gutting something that already seems to work. Of course we can point to cycle time and cost to be saved in the future but this generally means nothing to business folks. I know doctors can say "just take this pill," but I'm not sure that software devs have the same authority. Ideas? EDIT: Let me add a bit to the discussion. The specific project I'm talking about has customers that don't realize (or care) about specific aspects of the system we're retiring (i.e., they think it was just fine): The system would save a NEW RECORD every time someone updated a field The system contained tables for reference data. These tables had new records added every day, even though they were duplicates of previous records. And there was no way to tie the reference data used for a particular case at the time it was closed. This is like 99% of the data in the old system. The field NAMES also have spaces, apostrophes and other inappropriate characters in them, making everything harder to work with. In addition to the incredible amount of duplicate data, they have around 1000 XLS files with data they want added to the system. Previously, they would do a spreadsheet for each case in the database, IN ADDITION TO what they typed into the database. Getting rid of this old, unneeded information and piping in the XLS data comprises about 80% of the total project effort, and was not something we could accurately predict. I'm trying to find a concrete way to describe how bad this thing was, mostly so that the customer will understand why the migration process has been so time-consuming. The actual coding was done pretty quickly and the new system works fine, but without the old data they won't be happy. Sorry to get into the weeds, but most of the answers I've seen so far are pretty basic scope/schedule/cost things. I've been doing this for 15 years, so this really is more of a reflective, philosophical question - but without some of the details it can be difficult to really appreciate the awful beauty of this problem.

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  • DeveelDB

    - by csharp-source.net
    DeveelDB is a full embeddedable SQL database management system for .NET and Mono frameworks, managing small to large amount of data with a wide support for complex types. Some of the key features of this project are: - the strong transactional system for isolated operations an efficient memory management to reduce the impact on the runtime - its open architecture, to permit development of modules and features - a small footprint: the core library is ~1Mb

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  • Dynamic Web Applications with ASP.NET Mono using MySQL and VB.NET

    This tutorial will provide an example of an actual dynamic web application project in ASP.NET Mono using MySQL and VB.NET. A dynamic web application as described in this tutorial refers to a web application that depends on the use of a database. You will need to know how to use MySQL in an ASP.NET Mono project to understand this tutorial.... Comcast? Business Class - Official Site Sign Up For Comcast Business Class, Make Your Business a Fast Business

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  • Oracle Magazine, January/February 2010

    Oracle Magazine January/February features articles on the evolution of enterprise architecture, customer acquisition and retention with Oracle CRM On Demand, Oracle awards for 2009, task flow routers, privacy and security, Oracle Essbase, compressing with Oracle Exadata Hybrid Columnar Compression, Tom Kyte on Oracle Database 11g Release 2 and much more.

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  • Report Builder 3.0: Formatting the Elements in your Report

    There is a lot that can be done to make basic tabular reports more readable, using Microsoft's free Report Builder. Rob Sheldon continues his exploration of the power of this tool by showing how to format various elements within reports Is your SQL Database under Version Control?SSMS plug-in SQL Source Control connects SVN, TFS, Git, Hg and all others to SQL Server. Learn more.

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  • Filtering GridView Table Rows using a Drop-Down List in ASP.NET 3.5

    In the real world ASP.NET 3.5 websites rely heavily on the MS SQL server database to display information to the browser. For the purposes of usability it is important that users can filter some information shown to them particularly large tables. This article will show you how to set up a program that lets users filter data with a GridView web control and a drop-down list.... SW Deployment Automation Best Practices Free Guide for IT Leaders: Overcoming Software Distribution & Mgmt Challenges.

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  • Resource Governor

    If you suffer from runaway queries, if you have several database applications with unpredictable fluctuation in workload, or if you need to ensure that workloads get the memory or CPU they need according to certain priorities, then you need Resource Governer, and you need Roy Ernest's clear explanation of the technology. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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  • Connection Strings, an Overview

    We asked Phil to come up with a simple explanation of connection strings. We somehow weren't expecting a 'quote of the day' for your database, or a C# application to gather data from the internet. However, sometimes the oblique approach is the best, especially when the knowledge comes from hard-won experience by a cynical man.

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  • RTMPDUMPTV problem

    - by ranavita
    (Reading database ... 459988 files and directories currently installed.) Unpacking librtmp-dev (from .../librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb) ... dpkg: error processing /var/cache/apt/archives/librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb (--unpack): trying to overwrite '/usr/include/librtmp/amf.h', which is also in package rtmpdump 2.5-0ubuntu2~precise Errors were encountered while processing: /var/cache/apt/archives/librtmp-dev_2.4~20110711.gitc28f1bab-1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) above error code results after running sudo apt-get install -f A I am trying to fix the broken package of rtmptv

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  • Calgary .NET User Group &ndash; Entity Framework Code First - December 11th

    - by David Paquette
    I will be presenting at the Calgary .NET User Group on December 11th. We will start from scratch in this intro to Entity Framework Code First. We will build a simple application using ASP.NET MVC and Entity Framework and evolve the application to show how we can build scalable applications using Entity Framework Code First. Topics covered will include database initialization, code based migrations, performance profiling and performance tuning. Register at http://www.dotnetcalgary.com/

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  • Wait Statistics in Microsoft SQL Server

    - by KKline
    When it comes to troubleshooting in relational databases, there's no better place to start than wait statistics. In a nutshell, a wait statistic is an internal counter that tells you how long the database spent waiting for a particular resource, activity, or process. Since wait statistics are categorized by type, one look will quickly tell the variety of problem that needs your attention, assuming you know meaning for Microsoft's lingo for each wait type....(read more)

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