gloss_E-G

E-G

element

The XML element is part of the markup that describes data.

Errors collection

The ADO.NET Exception class has an Errors collection containing one or more Error objects that contain messages sent from the database server.

event log

A log provided by the Windows operating system. All programs running on a Windows system can write status messages to an event log. These logs can be viewed by accessing the Event Viewer utility.

EventLogTraceListener class

A derived class of the TraceListener class, this will write trace messages to the Windows event log.

evidence

Information identifying the code and its origin. Common types of evidence considered when evaluating (or administering) code access security are the application directory, the publisher, website of origin (for code downloaded over the web), the strong name, and the security zone from which code originates.

ExeuteNonQuery method

This method of the ADO.NET Commandclass executes a query against the database and returns the number of rows affected. It is typically used with SQL insert, update, and delete queries.

ExecuteReader method

This method of the ADO.NET Command class executes a query against the database and returns the resultset to a DataReader object.

ExecuteScalar method

This method of the ADO.NET Command class executes a query against the database and returns a single value.

ExecuteXMLReader method

This method of the ADO.NET SqlCommand class (supported only for the SqlClient provider), is used when executing a FOR XML query against the database which will return XML data to an XMLReader.

Extensible Markup Language (XML)

A markup language that enables you to add tags and attributes to a data file; these tags and attributes describe the meaning and structure of the data items. The XML standard defines a few simple rules that ensure consistency among all XML documents. These rules include case sensitivity, a uniquely named root element that encloses all the data, strict matching of start and end tags, proper nesting of elements within the hierarchy, and a few others. The XML standard was created and is maintained by the World Wide Web Consortium and therefore is neither vendor nor platform specific.

Extensible Stylesheet Language (XSL) and XSL Transformations (XSLT)

A technology that can be applied to XML data files when you need to change an existing format of XML data into a new format of output. The two primary uses for this are to apply HTML formatting tags to XML data so that the data can be displayed on a web page, and to change the format of the XML markup (while retaining the data values) so that the XML file can be sent to another application or consumer that requires the new format.

file-based authorization

A type of authorization using NTFS file security to determine whether the requesting client can access the resource. The only time that this can be used is when you are using Windows authentication.

Fill method

This method of the ADO.NET DataAdapter class runs a single SQL query against the data source and creates (or adds to) a DataTable in the DataSet.

Find method

This method of the ADO.NET DataView class searches the data.

Flush method

This method of the TraceListener classes ensures that messages are promptly written to their destination text files or log files.

FOR XML clause

An optional modifier that can be added to a standard SQL query in Microsoft SQL Server 2000. Adding this clause causes SQL Server to return XML results for the query rather than a recordset.

ForeignKeyConstraint

This ADO.NET class enables you to specify a primary key/foreign key relationship between two DataTables (by specifying the appropriate DataColumns in the tables) for the purposes of enforcing referential integrity. The ADO.NET ForeignKeyConstraint can be set to either allow or disallow cascading updates and deletes on the related tables.

forward-only, read-only recordset

A type of resultset that enables you to access each row in the resultset only once. You cannot scroll backward, and the recordset cannot be updated by the user.

gacutil.exe

This command-line utility provided with Visual Studio .NET enables you to install an assembly in the global assembly cache (GAC), which is a central directory on the computer that holds all shared components.

Generate DataSet menu

After creating and configuring an ADO.NET DataAdapter Toolbox component in your project, you can use the Visual Studio .NET Data Ø Generate DataSet menu choice to create an XSD schema and a Visual Basic .NET class in your project.

GetElementsByTagName method

This method of the XmlDocument class enables you to identify all of the elements within an XmlDocument that match the specified element tag name.

GetXml method

This method of the DataSet class returns an XML representation of the data contained in a DataSet.

GetXmlSchema method

This method of the DataSet class returns the XSD schema for the DataSet.

global assembly cache

A location to install assemblies that are shared by several applications. Assemblies must be assigned a strong name and installed into the GAC by using the gacutil.exe utility program.



MCAD/MCSD(c) Visual Basic. NET XML Web Services and Server Components Study Guide
MCAD/MCSD: Visual Basic .NET XML Web Services and Server Components Study Guide
ISBN: 0782141935
EAN: 2147483647
Year: 2005
Pages: 153

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