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WCF RIA Services – Domain Services

摘要：在一个三层架构的应用程序中，中间层介于表示层和数据层之间，你所写的业务逻辑和数据验证都将在中间层出现。创建拥有良好用户体验的RIA应用，你需要客户端和服务端有着相同的业务规则，因此在客户端和服务端保证同步的中间层变得至关重要。WCF RIA Services可以让你在中间层用.NET框架编写逻辑应用，下面将讲述如何使用Domain Services以共享代码、数据实体来创建中间层。DomainSe... 阅读全文

posted @ 2009-12-09 09:15 Metisria Geo 阅读(2695) 评论(5) 推荐(1)

WCF RIA Services (.NET Ria Services)

摘要： Silverlight要操作数据库，本身却不支持ADO.NET（无法引入System.Data.SqlClient），需要Web服务（WCF+LINQ），用Web服务挺麻烦的，就有了个简化版ADO.NET数据服务（类似WCF，但简单了许多），而ADO.NET数据服务在Silverlight上还是比较繁琐，于是就有了.NET RIA Services -- 更简化版的WCF，RIA Services... 阅读全文

posted @ 2009-12-07 17:16 Metisria Geo 阅读(4385) 评论(7) 推荐(3)

Group Functions

摘要： •Syntax •Group functions: –Use AVG, SUM, MIN, MAX, COUNT –Use DISTINCT keyword within group functions –NULL values in a group function •Grouping rows: –G... 阅读全文

posted @ 2009-09-28 13:37 Metisria Geo 阅读(304) 评论(0) 推荐(1)

Oracle 11g Networking Concepts

摘要： Database Instance Names \ Global Database Names \ Database Service Names \ Connect Descriptors ... 阅读全文

posted @ 2009-09-24 17:05 Metisria Geo 阅读(480) 评论(0) 推荐(0)

Connecting to a Microsoft Excel

摘要： You can connect to a Microsoft Excel using the OLE DB .NET data provider. The OLE DB connection uses the Microsoft.ACE.OLEDB.12.0, which is the new Access database engine OLE DB driver that can also read previous versions of Microsoft Excel workbooks. The Jet OLE DB driver cannot access Microsoft Excel 2007 or 2010. 阅读全文

posted @ 2009-09-24 15:34 Metisria Geo 阅读(357) 评论(0) 推荐(0)

Connecting to a Password-Protected Microsoft Access

摘要： Use the Jet OLEDB:Database Password attribute in the connection string to specify the password. The solution creates and opens a connection to a password-secured Microsoft Access database using the OLE DB .NET data provider. Information about the connection is displayed from the properties of the OleDbConnection object. 阅读全文

posted @ 2009-09-24 15:17 Metisria Geo 阅读(433) 评论(0) 推荐(0)

Connecting to SQL Server

摘要： You can connect to an SQL Server database using the SQL Server .NET data provider, the OLE DB .NET data provider, or the ODBC .NET data provider. The solution creates and opens a connection to an SQL Server database using the SQL Server .NET data provider, OLE DB .NET data provider, and ODBC.NET data provider in turn. In each case, information about the connection is displayed from the properties of the connection object. 阅读全文

posted @ 2009-09-24 15:05 Metisria Geo 阅读(409) 评论(0) 推荐(1)

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2009年12月9日