Tài liệu Using Transaction Isolation Levels to Protect Data doc

... defines the degree to which one transaction must be isolated from other transactions. A higher isolation level increases data correctness but decreases concurrent access to data. Table 6-18 ... user-defined isolation level. IsolationLevel il = IsolationLevel.Unspecified; if(chaosRadioButton.Checked) il = IsolationLevel.Chaos; else if(readCommittedRadioButton.Checked)...

Ngày tải lên: 14/12/2013, 18:16

... < Day Day Up > Using the Key Class to Add Interactivity The Key class is a useful tool for capturing key events from the user (that is, user interaction ... (such as Caps Lock) is toggled on or off The Key class is a top-level class, which means you cannot create a new instance of it. The most common use of the Key class is to determine whether a ... pressed. You would us...

Ngày tải lên: 21/01/2014, 13:20

... illustrates how to use the StateChange event */ using System; using System .Data; using System .Data. SqlClient; class StateChange { // define the StateChangeHandler() method to handle the ... database returns a warning or information message produced by the database. You use the InfoMessage event to monitor these messages. To get the message, you read the contents of...

Ngày tải lên: 14/12/2013, 13:15

... myXDD using Save(). 12. Display the DataRow objects in customersDT using DisplayDataRows(). Listing 16.18: USINGXMLDATADOCUMENT.CS /* UsingXmlDataDocument.cs illustrates how to use an XmlDataDocument ... XmlDataDocument object */ using System; using System .Data; using System .Data. SqlClient; using System.Xml; class UsingXmlDataDocument { public static void Di...

Ngày tải lên: 14/12/2013, 22:15

... </NewDataSet> Using an XmlDocument Object to Store an XML Document You use an object of the XmlDocument class to represent an XML document in a C# program. An XmlDocument object stores ... create a DataSet object and fill it with the top 2 rows // from the Customers table DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet, "...

Ngày tải lên: 14/12/2013, 22:15

... Chapter 2, "Introduction to Databases." Note The Get* methods are defined in all of the DataReader classes and work for all databases. Next you'll see how to use some of the methods ... Using the Get* Methods to Read Column Values Before I show you the other Get* methods that read column values, you need to know the standard C# types and the values they support...

Ngày tải lên: 24/12/2013, 01:17

... hierarchies to be constructed. Shaping is an alternative to JOIN and GROUP BY syntax that you can use to access parent/child data and associated summary data. The connection string using data shaping ... the data reader with a data type of Object that is a DataReader. Hierarchical result sets combine the results for multiple queries into a single structure. They are gen...

Ngày tải lên: 24/12/2013, 05:15

... Macintosh to communicate with SQL Server using native AppleTalk protocol. Banyan VINES Supports Banyan VINES Sequenced Packet Protocol (SPP) across Banyan VINES IP network protocol. Multiprotocol ... The native protocol of Novell Netware networks. TCP/IP Sockets [ Team LiB ] Recipe 1.6 Using an IP Address to Connect to SQL Server Problem You want to connect to a SQL...

Ngày tải lên: 21/01/2014, 11:20

... constants using System; using System.Configuration; using System.Windows.Forms; using System.Text; using System.IO; using System.Xml; using System.Xml.Schema; using System .Data; ... methods of the DataSet to write and read the XML data in addition to the schema information. [ Team LiB ] // Bind the default view of the Orders table to the grid. resultDataGr...

Ngày tải lên: 26/01/2014, 10:20

... based your design process. 2. Brainstorm as a class a list of information types and sources that could be seen as inputs into conceptual design. The instructor will write your answers on a flip ... 20 Activity 4.2: Inputs to Conceptual Design Exercise 1: Identifying Conceptual Design Inputs ! Identify the inputs to conceptual design 1. Think of the type of

Ngày tải lên: 09/12/2013, 17:15