InfoQ Homepage Development Content on InfoQ
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Making OpenXML Easy with ClosedXML
When working with Excel documents, developers usually use raw XML or rely on the Office Automation libraries. But the Office Automation library is not appropriate for servers and working with XML can be quite tedious. ClosedXML bridges the gap by providing an easy to use Office-like API without the overhead of COM. To introduce this library we spoke with Manuel De Leon of the ClosedXML project.
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Veracity, a New DVCS Based on a Distributed Database
Veracity is a DVCS that can be installed on Windows, Mac, and Linux, and uses a distributed database for its repository.
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Selenium 2 (a.k.a Selenium WebDriver) Is Released
The Selenium team has recently released Selenium 2 (a.k.a. Selenium WebDriver), a major update to the poplar test framework for web applications.
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Xamarin Gets All IP Rights for Mono and Related Products
Mono is back where it started. Miguel de Icaza and his developers have all legal rights to continue developing Mono and all related products due to an agreement with SUSE, now part of The Attachmate Group.
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CassandraSF2011: Progress and Futures
Johnathan Ellis keynoted at Cassandra SF 2011. Ellis reviewed accomplishments including better support for multi-data center deployments, optimized read performance, included integrated caching and improved client APIs including a SQL-like language CQL. Looking forward, Ellis emphasized polish - efficient database repair, storage compression, optimized performance and an expanded CQL language.
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Cassandra Indexing Guidelines from CassandraSF2011
Ed Anuff reviewed Cassandra's built-in secondary indexes, noting that they don't work well for high cardinality values, require at least one equality comparison and return unsorted results. Anuff presented patterns for alternative indexing including wide rows and tables that use Cassandra 0.8.1's new composite comparator operators to overcome these limitations.
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Forrester Proclaims Data Virtualization Technology Coming of Age
Businesses have been strangled by high integration costs from ETL and DBMS consolidation initiatives which still leads to information silos and a broken data infrastructure. Forrester in its latest report claims that data virtualization driven by technological advances and customer successes is ready for massive adoption.
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Google Code Gets Git
Google Code has finally released support for Git repositories on Google Code, adding to the existing DVCS support with Mercurial and the CVCS support of Subversion. The only remaining player not to fully move towards Git repositories is now Apache, which has its own read-only copies of a writable Subversion repository.
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Proposal for Eclipse-based Requirement Modeling Framework Released
Recently, a proposal for the Requirements Modeling Framework (RMF) has been officially released by eclipse.org. Vision is to have at least one clean-room implementation of the OMG ReqIF standard in form of an EMF model and some rudimentary tooling to edit these models.
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SQL Server ‘Denali’ CTP Gets Self Service BI Capabilities
Microsoft recently announced CTP 3 for SQL Server ‘Denali’, which boasts of improved BI capabilities like Self Service Alerting, Self Service Reporting, improved Office integration, SharePoint Shared Service, better VS Tooling for developers and more.
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Mozilla Proposes to Sign-in Only with the Email Address, No User ID or Password Required
A new authentication system, dubbed BrowserID, from Mozilla promises to solve the basic authentication needs, but its success highly depends on its adoption.
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LocalDB: A Lightweight SQL Express for Developers
LocalDB is a new version of SQL Express that offers many of the same features, but installs faster, has fewer prerequisites, and doesn’t require management of a database instance. It supports T-SQL, and uses the same client-side providers as other versions of SQL Server, but runs in-process, rather than as a service.
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The Legacy of Eli Goldratt
On June 11th 2011, Dr. Eli Goldratt, inventor of the Theory of Constraints (TOC), passed away. Eli’s first, and most famous book was the "The Goal", it defined the TOC. His legacy will continue to indirectly influence the agile by the embodiment of his ideas in techniques we apply every day.
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MVP Erland Explores SQL Server Performance Concepts
In "Slow in the Application, Fast in SSMS?", SQL Server MVP, Erland Sommarskog, explores the various things that affect Query Plan, compilation of Dynamic SQL and other things that ultimately affect your SQL Server Database Performance. He covers various concepts and scenarios like parameter sniffing, query plan caching, Blocking, saved settings, issues with linked servers and more.
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Google+ Technological Details
Google Plus, the social network from Google, is built mostly on Java and JavaScript while Hangouts, its video conferencing framework, uses a client-server approach.