Tag Archives: Entity_Framework

Managing BLOBs using SQL Server FileStream via EF and WCF streaming

Posted on February 20, 2012 by

Für mehr Informationen zu diesem Thema in Deutsch siehe meinen Artikel “Stream das BLOB” im dotnetpro Magazin 6/2012. With FileStream SQL Server 2008+ stores BLOBs in the NTFS file system instead of its table store and offers fast streaming access. … Continue reading →

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Using Transactional NTFS (TxF) with SQL Server in .NET

Posted on February 19, 2012 by

I just stumbled across the very new Transactional NTFS (TxF) .NET managed wrapper by Pietro Partescano and gave it a try. TxF offers transactional protection for NTFS operations: Atomic operations on single files. Makes writing files more robust. Transactions for … Continue reading →

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.NET Database Access Options

Posted on April 10, 2011 by

Database access options in .NET: Plain ADO.NET and DataSets See The SQLCommandBuilder is way Better than its Reputation. Create a custom simple ADO.NET data access wrapper Provider independent using System.Data.Common Microsoft Enterprise Library, Data Access Application Block (DAAB) Can be used … Continue reading →

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My Advice for .NET Application Architecture and Design

Posted on April 10, 2011 by

This post summarizes my general architecture and design guidelines for developing applications and points to some interesting NET technologies. Reading this post will not make anyone an architect, but working through it should give you a good foundation for understanding … Continue reading →

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DB Concurrency Control with .NET – Details

Posted on March 14, 2011 by

[To put this post into perspective see DB Concurrency Control with .NET - Overview] The following patterns are commonly used in applications to control database concurrency: Optimistic Control in UI Scenarios in Service Scenarios Pessimistic Control SQL Locking Hints Check-out Locking … Continue reading →

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Know your Database System!

Posted on March 14, 2011 by

[To put this post into perspective see DB Concurrency Control with .NET - Overview] Developing database centric applications you must(!) understand the fundamentals of your specific database management system – even when using an ORM: You must understand the DBMS architecture … Continue reading →

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Use the .NET TransactionScope

Posted on March 13, 2011 by

The TransactionScope class provides an elegant way to enclose a set of operations against resource managers in a transaction. Resource managers are: Databases (SQL Server, Oracle, DB2, …) MSMQ Transactional NTFS file system TxF Transactional Registry Custom resource managers See … Continue reading →

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Avoid unwanted Escalation to Distributed Transactions

Posted on March 13, 2011 by

[editing in progress!] When working with the .NET TransactionScope we want to use simple, lightweight, (local) transactions and avoid  escalating to distributed transactions if possible. This is not a problem when using SQL Server 2008+ and not nesting connections but … Continue reading →

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DB Concurrency Control with .NET – Overview

Posted on March 5, 2011 by

This (long) posting provides guidelines for using common patterns to control concurrency when using relational databases (RDBMS) via ADO.NET or the .NET Entity Framework (EF). MS SQL Server and Oracle are used as examples to sensitize you for the implications … Continue reading →

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