The default Way to handle concurrency of Entity Framework is using optimistic concurrency. When two clinets update the same entity, one of theirs data will be lost without any notify. Some times, the client want to know if his data has been saved suc…

因为项目需求,现在需要利用EF 操作由Arccatalog生成的sql server空间数据库..在此之前,一直没有接触过空间数据库,在操作空间数据库时 绕了许多弯... 因此写一篇随笔做一个总结.  首先,我们了解一下空间数据库:空间数据库是指地理信息系统在计算机物理存储介质上存储的与应用相关的地理空间数据的总和,一般是以一系列特定结构的文件的形式组织在存储介质之上的.  在微软的官方文档中,有详细关于空间数据的介绍  https://docs.microsoft.com/zh-cn/sql/…

There are three types of relationships in database. They are: One-to-Many One-to-One Many-to-Many The One-to-Many relationship Write some codes first: class Company { public int CompanyId { get; set; } [MaxLength(50)] public string CompanyName { get;…

最近想试着学习ASP.NET MVC,在点击 添加--新建项--Visual C#下的数据中的ADO.NET 实体数据模型,到"选择您的数据连接"时,出现错误,"在 .NET Framework Data Provider for Microsoft SQL Server Compact 3.5 中发生错误.请与提供程序供应商联系以解决此问题.",这里写下,以防自己忘记. 网上查了一下,说是重新安装一下 .NET Compact Framework 3.5,http…

P6 Professional Installation and Configuration Guide (Microsoft SQL Server Database) 16 R1       May 2016 Contents About This Guide...................................................................................... 11 Shared Topics in This Guide .…

(原文地址:http://blogs.msdn.com/b/varund/archive/2010/09/02/create-a-sql-server-database-on-a-network-shared-drive.aspx) Create a SQL Server Database on a network shared drive (创建基于网上邻居共享路径的数据库) Sometime back, I have written blog post on ‘Backing-up SQL…

转载自:https://www.mssqltips.com/sqlservertutorial/121/restore-sql-server-database-and-overwrite-existing-database/   Restore SQL Server database and overwrite existing database (RESTORE ... WITH REPLACE) Overview The RESTORE ... WITH REPLACE option all…

SQL Server database administrators may frequently need in especially development and test environments  instead of the production environments to kill all the open connections to a  specific database in order to process SQL Server maintenance task ov…

新建一个SQL Server Database Project,提示: Unable to open Database project This version of SQL Server Data Tools is not compatible with the database runtime components installed on this computer. 老外说因为安装了Microsoft SQL Server 2012 SP1导致,而我并没有安装它且两个月前创建项目是成功的…

SQL Server Database Backup and Restore in C# Syed Noman Ali Shah,                          7 Feb 2015                                      CPOL    3.82 (6 votes) 1 2 3 4 5 3.82/5 - 6 votes μ 3.82, σa 2.09 [?]   Rate: Add a reason or comment to your v…