DotNetKicks.com - published database stories

EF 4.1+ POCO, Repository and Specification Pattern Framework

Tue, 22 May 2012 13:49:15 GMT

I've been playing around with Code First EF implementations for awhile now and by far the best implementation I've seen is a framework by Huy Rua. It has the following functionality baked in: True Separation of Concerns for entities (no need for a data annotations dependency). A Generic Repository. This should do the trick for 80% of your standard CRUD operations without the need for repo's per entity. Supports multiple DbContext's and builds them dynamically. And finally a straightforward Specification pattern implementation. I use it as a base data layer for all my projects.

EF5 Release Candidate Now Available

Wed, 16 May 2012 14:09:23 GMT

The release candidate for Entity Framework 5.0 is now available on Codeplex. There have been several new improvements since beta 2.

Persisting Enumeration Classes with nHibernate

Wed, 02 May 2012 00:41:24 GMT

Jimmy Bogard shares an example of persisting enumeration classes to the database, and reading them back out with the correct representation.

Tackling timeouts

Thu, 26 Apr 2012 13:56:08 GMT

A brief how-to of how to cope with SQL timeouts.

SQL Server Transaction Savepoints

Mon, 23 Apr 2012 14:58:05 GMT

Sometimes Transact-SQL (T-SQL) scripts require the ability to roll back some parts of a transaction whilst allowing other elements of a process to be committed to the database normally. This can be achieved with the use of transaction savepoints.

Which ORM tool is the Best for .NET?

Fri, 20 Apr 2012 08:40:35 GMT

Check out the results from Pluralsight's poll asking their users which is the best best Object-relational mapping tool for .NET.

Open DBDiff for SQL Server 2008

Thu, 19 Apr 2012 14:09:11 GMT

Last few weeks , i have been playing around with this cool tool called Open DBDiff . As the name suggests Open DBDiff

Good Devs Don't Like Magic

Tue, 21 Feb 2012 20:20:47 GMT

Solutions of the "magical" variety go out of their way to hide (obfuscate?) the underlying implementation. They present the developer with a Faustian bargain: I'll make it easy for you to get things done so long as you don't question how I work.

EF 4.3 Code-Based Migrations

Fri, 10 Feb 2012 17:26:34 GMT

Entity Framework 4.3 has been released, and the big new feature is migrations for code-first projects. This article is a walkthrough of how to take advantage of the new migration support.

Basic Raven DB Indexing and Querying with Lucene

Wed, 08 Feb 2012 17:39:59 GMT

We've got up and running with Raven DB for our new project, which has been a delight to use from a code perspective, but one of the big gaps for me is figuring out how to do SQL like queries. I'm not too bad at putting a SQL query together as something I do semi-regularly as part of my job, so I thought it shouldn't be too much of a stretch to start pulling some statistics. I was wrong.

Why is RAID So Important for Databases?

Tue, 07 Feb 2012 15:32:36 GMT

A good server design has no, or very few, single points of failure. One of the most common server component that fails, are disks. So data redundancy becomes essential to recoverability. Redundant Array of Independent/Inexpensive Disks (RAID) is a disk system that provides better fault-tolerance by making use of redundancy of disk(s).

Redis 2.4.6 has been released

Fri, 13 Jan 2012 15:11:44 GMT

Redis 2.4.6 has been release,it fixes a critical replication bug and adds a minor feature

Telerik OpenAccess ORM Q3 2011 - Connection pool types

Fri, 13 Jan 2012 15:11:44 GMT

With the Q3 2011 release of Telerik OpenAccess ORM we introduced three connection pool type settings. The OpenAccess Connection Pool, OpenAccess Connection Pool with OpenAccess Connection Management and the ADO Connection Pool. This blog post will show how these types can be used and when it makes sense to make use of them.

NoSQL MongoDb Enterprise Design with C# .NET, the Repository Pattern

Tue, 10 Jan 2012 17:12:26 GMT

Learn how to use a NoSQL MongoDb database to create a simple .NET application for displaying Dragons. Our architecture will utilize the repository pattern, combined with a global database context provider. We'll create a 3-tier system for accessing the Dragons, creating, updating, and deleting.

NHibernate: Collections of components - an alternative

Fri, 30 Dec 2011 15:33:28 GMT

When we have a model where an entity has some properties collections used for displaying it to the customer and we are not querying our data by these properties at all, it may seem right to map these collections in NHibernate as collections of components. Component in NHibernate is an object without its own identity, being a part of its parent entity. Our collections sounds similiar in terms of lifetime and ownership, but different in terms of relationship - these are one-to-many. In complex scenarios, additional queries became a serious issue. We've decided to try another solution - it's so simple that it can't go wrong.

Performance Tips: Speed up Data Access

Fri, 16 Dec 2011 05:18:28 GMT

Faster performance in business applications comes down to reducing the "critical two" -- disk I/O and trips to the server. Doing that means doing a lot of things right, starting with your database design -- and tweaking your ADO.NET code helps, too.

Mindscape Blog » Blog Archive » 5 reasons not to use a micro ORM

Mon, 12 Dec 2011 06:25:35 GMT

An interesting counter-argument against the recent trends towards lightweight micro-ORM frameworks in the .NET database world.

New and Updated Resources Available for Telerik OpenAccess ORM

Thu, 08 Dec 2011 16:39:34 GMT

As we are constantly trying to make the Telerik OpenAccess ORM learning resources and documentation better and easier to use, we have made some changes that you might find very useful. Getting Started Videos ...

SQL Server Download Links All Editions [Very Useful]

Fri, 02 Dec 2011 11:02:31 GMT

With SQL Server 2012 RC0 recently announced and a plethora of previous editions already available, it can get tedious to keep track of all these downloads. In this post, I will attempt to share the download links of all SQL Server versions - SQL Server 2012, SQL Server 2008 & R2 and SQL Server 2005.

I Just Don't Like Object Mappers

Tue, 22 Nov 2011 14:49:14 GMT

Karl Seguin also discusses the use of Object Relational Mappers, and Data Mappers and how he has a growing dislike of them.

Polyglot Persistence: Using multiple database technologies in one app

Fri, 18 Nov 2011 15:54:30 GMT

Martin Fowler discusses how the concept of polyglot programming, using many languages for a single enterprise application, is bleeding into the realm of data persistence. He gives an example of how various pieces of an application may store data differently, and advises that you should no longer assume your persistence layer is relational, or that all of your data will be held within the same store.

Linq query or plain SQL? On using tools for what they are made for.

Fri, 18 Nov 2011 14:54:15 GMT

There are some scenarios where using NHibernate.Linq makes no sense. NHibernate's provider is just a tool, with its design, its features and its limitations. It's important to be aware what each tool is the best at and not to look for universal tool.

The Entity Framework (v1 and v4) Deal Breaker: TPT Inheritance

Fri, 04 Nov 2011 13:34:17 GMT

Samuel Meacham highlights a crucial performance issue when dealing with many inheritance models in the Entity Framework 4. Microsoft has to this day not dealt with the issue, and in something of a scandal, has deleted the bug report on Connect that Sam filed. Sam offers a good reason to stay clear of the Entity Framework for the time being and perhaps a long time to come too.

Microsoft Data Explorer Walkthrough

Wed, 19 Oct 2011 17:21:32 GMT

Micosoft's Data Explorer team walks us through their new cloud service which allows you to discover, enrich, and publish your data in new and interesting ways.

Massive (The Micro-ORM), winforms and VB.Net

Tue, 18 Oct 2011 06:21:34 GMT

Christiaan Baes takes an introductory look at the use of the Massive Micro ORM from Rob, walking through a getting started from installation to retrieving data. (Courtesy of The Morning Brew.)