... iDATA.ws Chapter 20 Using LINQ to SQL After completing this chapter, you will be able to: Build LINQ queries that use the LINQ toSQL providerUnderstand how LINQ toSQL prepares queries ... LINQ toSQL product based on customer feedback.Note The exercises in this chapter all use the same sample project, a tool that makes queries using LINQ to SQL. Although you will be able to run ... AdmittedInYear custom function from the Server Explorer tree to the right half of the designer surface. This adds a reference to a database- level function, allowing it to be used in your LINQ toSQL queries.Dwonloaded...
... and constants using System; using System.Configuration; using System.Windows.Forms; using System.Text; using System.Data.SqlClient; // . . . private void connectButton_Click(object ... need to understand what a SQL Server or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to ... [ Team LiB ] Recipe 1.7 Connectingto a Named Instance of SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of a SQL Server or Microsoft Data...
... resultTextBox.Text = result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is ... users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The Set Database command from the Tools Security menu is used to set ... to set up a database password. The OLE DB provider for Microsoft Jet has several provider-specific connection string attributes in addition to those defined by ADO.NET. To open a database secured...
... [ Team LiB ] [ Team LiB ] Recipe 1.4 Connectingto a Secured Access Database Problem You want to connect to a Microsoft Access database that has been secured with user-level security ... Button.Click Creates and opens a connection to a Microsoft Access database secured with user-level security and a workgroup file using the OLE DB .NET data provider. Information about the database ... Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using System.Data.OleDb; // . . . private void connectButton_Click(object sender, System.EventArgs...
... LINQ toSQL Tutorial 3 Mục lục Bài 1: Sử dụng LINQ toSQL 6 1. LINQ toSQL là gì? 6 2. Mô hình hóa CSDL dùng LINQ to SQL: 6 3. Tìm hiểu lớp DataContext 7 4. Các ví dụ LINQ toSQL 8 ... của sổ thiết kế LINQ to SQL, và cũng là cái mà bạn sẽ thấy ngay khi tạo ra một mô hình dữ liệu LINQ to SQL: LINQ toSQL Tutorial 30 Câu SQL ở trên cho phép tính to n tất cả các giá ... cách dùng LINQ toSQL DataContext, và tất cả các thay đổi đó sẽ được lưu vết lại. 2009 LINQ toSQL Tutorial From ScottGu blog Đào Hải Nam LINQ toSQL Tutorial 7 ...
... 51202 IsraelLINQ to Relational DataãLINQ to DataSetLeveraging the existing investmentãLINQ to SQL Designer-generated mappingCustom mapping, ORM facilitiesãLINQ to Entities VS2008 ... 51202 IsraelQuerying InheritanceãThe OfType query operatorThe LINQ toSQL query provider translates it to a WHERE on the discriminator column//LINQ:var cars = from car in context.GetTable<Vehicle>() ... Supported?ãAll language-integrated query operatorsãMost standard query operatorsãInserts, updates and deletesãCustom SQL commands (strings)ã Database creation from mappingãTransactional...
... The SQL Editor enables you to write and execute SQL commands on any connected database. Note: When using the SQL Editor, each SQL statement you execute can only contain one command.Databases ... represents a connection to a database. You need to set up a separate connection to each database on your database server that you want to use. You can use the database connection node to do the following:■Check ... following topics:■Setting Up Your Resources■Bundled databases■Other databases■ Connecting to Databases■Adding Database Drivers■Establishing a Database Connection■Working with a Database...
... is best to change it to no. Also, anyOS X clients connectingto the FreeNAS via NFS willissue a few warnings about needing usernames andpasswords. When Map all users to root is set to no,this ... Linux distribution you are using mayhave a graphical to mount NFS shares, but the lowestcommon denominator that works for all Linux versionsis to use the command line. To mount the FreeNAS server ... a new directory within the current remotedirectory. Chapter 4. Connectingto the FreeNASThe strength of the FreeNAS server is that so manydifferent operating systems can connect to it and...
... so that it's possible to create a database using a simple form of CREATE DATABASE: CREATE DATABASE < ;Database Name>ãOther default values apply to the new database and its files. If ... Trigger & CurrorAppendex: MS SQL Administrator 1. Creating Databases (Continue) Using CREATE DATABASE commandãAlmost all the possible arguments to the CREATE DATABASE command have default ... Can SQL do?Execute queries against a database Retrieve data from a database Insert records in a database Updata records in a database Delete records in a database Create new databasesCreate...
... assigned to the database user. You could also allow access to the databaseusing only stored procedures; you'll see how to run a stored procedure using a URL in the next section. Running Stored ... xmlns :sql= "urn:schemas-microsoft-com:xml -sql& quot; sql: xsl="CustomersStylesheet.xsl"> < ;sql: query> SELECT TOP 2 CustomerID, CompanyName, PostalCode, Country, Phone FROM Customers ORDER BY CustomerID ... directory containing XML and XSLT files, or a database object (dbobject) to a path relative to your virtual directory. Click the New button and set your Virtual Name to Templates, the Type to...
... On the Access computer, the user account that is used to access the database requires Read, Write, Execute, and Change permissions on the database file. The user identity needs Read, Write, ... Change permissions on the folder containing the database files. The user account requires permissions to access the share that contains the database file and folders. The user account must ... is configured to prevent users of the web site from viewing the contents of the web.configfile—this is the default configuration. Other ways to impersonate a user from an ASP...