barcode generator in vb.net 2005 SQL and XML in Software

Creation QR Code 2d barcode in Software SQL and XML

SQL and XML
QR Recognizer In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Generating QR Code In None
Using Barcode printer for Software Control to generate, create QR Code 2d barcode image in Software applications.
can be translated into this equivalent hybrid SQL/XML statement:
QR Recognizer In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Painting QR Code In C#.NET
Using Barcode creation for .NET framework Control to generate, create Quick Response Code image in .NET framework applications.
UPDATE WITH < xml version="1.0" > OFFICES WHERE OFFICE = 23 <update_info> <values> <target>200000.00</target> <mgr>108</mgr> </values> <where>office = 23</where> </update_info>
Quick Response Code Maker In VS .NET
Using Barcode creator for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
Paint QR Code In .NET Framework
Using Barcode encoder for VS .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
and a DELETE statement requires only the specification of the WHERE clause, using the same conventions. While several SQL DBMS brands have added the capability to process XML-based INSERT, UPDATE, and DELETE operations using this type of approach, the specific techniques for representing table and column names and data values in the XML text, and for mapping them to corresponding database structures, are DBMS-specific. While the ANSI/ISO SQL standard includes the specification for using INSERT, UPDATE, and DELETE statements and columns with the XML data type, and for the WITH clause that supports providing XML options in SQL statements, there are no standards (yet) for the type of hybrid SQL/XML syntax in these examples. Although representing input and update values as small XML documents is conceptually straightforward, it represents some significant DBMS processing issues. For example, the column list in a SQL INSERT statement appears to be redundant if the XML document containing the data values to be inserted also contains the column names as either element or attribute names. Why not simply drop the column list and let the XML documents specify which columns to insert For interactive SQL, there is no problem in doing this, but the XML format is unlikely to be used for an interactive SQL session. For programmatic use of SQL, the problem is that the XML document and the data values that it contains will be supplied to the DBMS at runtime. If the column names (or even the table name) are also supplied only in the XML document, then the DBMS cannot know, until runtime, which tables and columns are affected. In this situation, the DBMS must use dynamic SQL to handle the processing, as described in 18, with all of its associated performance penalties. Similar problems arise with the WHERE clause in an UPDATE or DELETE statement, and the SET clause of the UPDATE statement. To get the performance and efficiency of static SQL, the DBMS must know in advance (when the program is compiled) which search conditions will be used and which columns will be updated. One approach to this problem is to use the parameterized form of these statements. Here is the same UPDATE example, using this approach:
Painting QR Code 2d Barcode In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create QR Code image in VS .NET applications.
Generate European Article Number 13 In None
Using Barcode printer for Software Control to generate, create EAN-13 Supplement 5 image in Software applications.
UPDATE WITH < xml version="1.0" > OFFICES SET TARGET = , MGR = WHERE OFFICE = <update_info> <param>200000.00</param> <param>108</param> <param>23</param> </update_info>
Creating Barcode In None
Using Barcode creation for Software Control to generate, create bar code image in Software applications.
UPC Symbol Printer In None
Using Barcode encoder for Software Control to generate, create GS1 - 12 image in Software applications.
PART VI
Painting EAN / UCC - 14 In None
Using Barcode encoder for Software Control to generate, create EAN / UCC - 14 image in Software applications.
Draw Code-39 In None
Using Barcode printer for Software Control to generate, create Code 39 image in Software applications.
Part VI:
Create Leitcode In None
Using Barcode drawer for Software Control to generate, create Leitcode image in Software applications.
Create Code-128 In Java
Using Barcode creator for Java Control to generate, create Code 128 Code Set B image in Java applications.
SQL Today and Tomorrow
Create Code 39 In Visual C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Code-39 image in VS .NET applications.
Decoding Bar Code In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
With this style, the XML text and the SQL text are actually quite separate. The SQL text is self-contained and can be processed at compile-time. The XML text is self-contained, and the DBMS can match its parameter values to the needed statement parameters at runtime. This example follows the usual SQL style of specifying parameters by position, but the XML document loses a lot of its self-describing qualities as a result. Depending on the DBMS, it may be possible to use named elements within the XML document and match them to named statement parameters at runtime.
DataMatrix Drawer In Visual C#
Using Barcode printer for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET applications.
Making Code 128B In VS .NET
Using Barcode drawer for Reporting Service Control to generate, create Code 128 Code Set B image in Reporting Service applications.
XML Data Exchange
Bar Code Maker In None
Using Barcode creator for Word Control to generate, create bar code image in Microsoft Word applications.
Bar Code Encoder In Visual Studio .NET
Using Barcode generator for VS .NET Control to generate, create bar code image in VS .NET applications.
A DBMS can support XML data exchange in a simple form merely by supporting XML output for query results and XML input for INSERT operations. However, this requires the user or programmer to carefully construct the format of the generated query results in the source database to match the expected format for the INSERT operations in the destination database. XML data exchange is more useful if the DBMS provides more explicit built-in support. Several commercial DBMS products now offer the ability to perform a bulk export of a table (or in a more sophisticated operation, the results of a query) into an external file, formatted as an XML document. At the destination end, these products offer the same ability to do a bulk import from this same type of file into a DBMS table. With this scheme, the XML document file becomes a standard way of representing table contents for the exchange. Note that once XML-based table import/export capabilities are offered, their use is not restricted to database-to-database exchanges. The source of the XML document in the data exchange file could well be an enterprise application, such as a Supply Chain Management (SCM) system. The destination similarly could be an enterprise application. In addition, many EAI, EII, and ETL systems now support XML document files. These systems provide further processing and integration capabilities, such as eliminating duplicated data and combining data from multiple input files.
Copyright © OnBarcode.com . All rights reserved.