InfoQ Homepage Data Access Content on InfoQ
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VMware vFabric SQLFire Is Both an SQL Distributed Cache and a Datastore
VMware vFabric SQLFire is an in-memory distributed SQL-based cache which can work with a traditional database to persist data to disk.
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Entity Framework 4.1 - Validation
Validation is an interesting feature introduced in Entity Framework 4.1. It enables to validate entities or their properties automatically before trying to save them to the database as well as “on demand” by using property annotations. There are also a lot of improvements made to Validation from CTP5 to RTW version of Entity Framework 4.1.
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Differing Opinions: DTOs vs Domain Objects
Since the introduction of NHibernate and WCF, .NET developers have been moving closer and closer to the concept of unified entity-models. The end game here is that the same class can be act as your ORM entity, your WCF DTO, and your model for a MVC, MVP, or MVVM framework. Mark Seemann, author of Dependency Injection in .NET, argues this isn’t necessarily a good thing.
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Introducing the Entity Framework Power Tools
The introduction of a Code First option in Entity Framework has received quite a bit of praise. While it still has a long way to go before it unseats the reigning ORM, nHibernate, the progress Microsoft is making is quite astounding. In order to keep the momentum up Microsoft is releasing a set of power tools that will take an existing database and create a Code First representation.
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Google Storage is Now Available to All Developers
Google has announced at I/O 2011 the availability of their Storage service to all developers without the need for an invitation. The service has been enhanced with OAuth 2.0 support, simplified account management through the API Console, a new EU storage region, and a new API version.
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SQL Server 2008 SP1 and Feature Pack CTP Bring New Features and Tools
Microsoft has announced the availability for download of SQL Server 2008 R2 SP1 CTP, including all cumulative updates, and SQL Server 2008 R2 SP1 Feature Pack CTP1, containing a number of stand alone tools adding more value to SQL Server 2008.
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StackOverflow’s ORM goes Open Source - Dapper.Net
A simple ORM used in StackOverflow titled Dapper.Net was recently released on code.google.com. This ORM specializes in fast generation of objects from SQL query results. Dapper.Net supports mapping query results to a strongly typed list or a list of dynamic objects. The ORM is a single file of less than 500 lines of C# code and is available under the Apache 2.0 License.
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Trinity: Microsoft Research’s Hypergraph Database
MS Research has begun working on its own graph database, Trinity. Graph databases store data in terms of nodes and edges instead of rows and columns, making them quite effective for loosely and arbitrarily connected data. Hypergraphs extend this by allowing one edge to connect multiple nodes. Potentially uses for this included social networks, movie recommendations, and related product searches.
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Entity Framework 4.1 gets DbContext API – but no Database Evolution, SPs or Cached queries
ADO.NET Entity Framework 4.1 is upon us – slated for a late April release, it will come with a whole set of new features, but not all of them are going to make it.
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Couchbase Announces Couchbase Server and an Advisory Board
Couchbase, the company recently formed by merging Membase and CouchOne, has announced the availability of Couchbase Server in addition to Membase Server and Mobile Couchbase, along with the Advisory Board Members.
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Oracle's Java EE 7 Plans Include Adding Cloud and HTML5 Support to the Platform
Oracle filed the umbrella JSR for Java EE 7 last week, and the specification has now passed the initial review ballot stage. The overarching themes are emerging web technologies, cloud computing, and continued ease of use improvements including an overhaul to the JMS API. Elsewhere, JPA is scheduled to receive attention, and Oracle is talking about plans to revive the long dormant JCACHE JSR.
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Google Debuts OAuth 2.0 Support for Google APIs
Today Google announced experimental support for OAuth 2.0 with bearer tokens. In addition, as a side announcement they've launched a new consent page for OAuth 2.0 designed with cleanliness and simplicity in mind.
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LINQ to Objects Projects: EduLINQ, MoreLINQ, and LINQBridge
EduLINQ is an attempt to explain how LINQ to Objects operators work. MoreLINQ is a set of LINQ to Objects operators extending the standard ones. LINQBridge is a port of LINQ to Objects to .NET Framework 2.0.
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Column-based Storage in SQL Server 2011
Imagine ad hock data mining queries against a single table with 1 TB of data and 1.44 billion rows coming back in roughly a second. This is the scenario Microsoft intends to support using 32-core machines and their new column-based storage engine.
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Better Developer Experience in Version 1.5 of the Data Access Framework MetaModel
Eobject.org's open-source Java framework MetaModel implements a unified API for the access, exploration, and query of different datastores. Eobjects.org, both a website and an open source software organization dedicated to "the development of Open Source software related to Business Intelligence and Data Warehousing", has recently published version 1.5 of MetaModel.