Posts Tagged ‘70-315’

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What is Trace.axd?

October 27th, 2009

Trace.axd is an Http Handler that can be used to view the trace details for an application. This file resides in the application’s root directory. A request to this file through a browser displays the trace log of the last n requests in time-order, where n is an integer determined by the value set by requestLimit=”[n]” in the application’s configuration file.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the function of the FROM clause?

September 24th, 2009

The FROM clause of the SQL SELECT statement is used to specify the table names that will be joined together to extract the data values. For example:

SELECT <attributes>
FROM <tables>
WHERE <condition>

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Posted in CIW Professional, MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003, Master CIW Enterprise Developer

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What is the ExecuteNonQuery method?

September 21st, 2009

The ExecuteNonQuery method of the SqlCommand class is used to execute commands that change a database. These commands include the Transact-SQL INSERT, UPDATE, DELETE, and SET statements. The method acts directly on a database connection and does not require a data set. It returns an integer that indicates the number of rows affected by the execution of a command. This method can also be used to perform catalog operations, such as querying the structure of a database or creating database objects.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the GetChildRows method?

September 21st, 2009

The GetChildRows method of the DataRow class is used to get the child rows of a DataRow object. The DataRow class defines four overloaded versions of the method. Their signatures are as follows:

Signature Description
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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the WriteXml(string, XmlWriteMode) method?

September 21st, 2009

Following is the syntax for the WriteXml(string, XmlWriteMode) method of the DataSet class:

datasetobjectname.WriteXml(filename, mode);

where, datasetobjectname specifies the name of the DataSet object, filename specifies the name of the file, including the path, to which to write data, and mode specifies an XmlWriteMode value. Following are the values that can be used for XmlWriteMode:

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the CreateEventSource method of the EventLog class?

September 21st, 2009

The CreateEventSource method of the EventLog class establishes an application as a valid event source for writing event information to a particular event log on a computer. The event log used to write entries can be the event log available by default on a computer or a custom event log. This method can also be used to create a custom event log on a computer.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is Web Setup project?

September 1st, 2009

The Web Setup project is a Setup and Deployment project, which is used to create installation packages for the deployment of Web-based applications such as XML Web services, Web applications etc., to a Web server. It creates an (.msi) installer package. Using the Web Setup project for deployment handles the registration and configuration issues automatically.

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What is a destructor?

September 1st, 2009

A destructor is a special type of method. It is used to destroy instances of a class when they are no longer used by an application. A destructor has the same name as the class in which it resides, preceded by a tilde (~) symbol. The garbage collector determines when the destructor of a class is to be called, and automatically calls it. The destructor implicitly calls the Object.Finalize method on the object’s base class. Following are some restrictions imposed on the usage of destructors:

  • Destructors can be used only with classes.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is SqlDataAdapter?

September 1st, 2009

SqlDataAdapter is a class used to represent a set of data commands and a database connection that are used to fill a DataSet and update a SQL Server database. It is used to retrieve and save data between a DataSet and a data source. The SqlDataAdapter class is used in conjunction with the SqlConnection and SqlCommand classes to enhance the performance while connecting to a SQL Server database.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is Sn.exe?

August 31st, 2009

Strong Name (Sn.exe) is a tool used to sign assemblies with strong names. It also provides signature generation, signature verification, and key management. Following is the syntax for using Sn.exe:

sn [options [parameters]]

where, the term options specifies the options to be used, and parameters specifies the parameters used with options. Following are the options that are commonly used with Sn.exe:

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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