XML -- How to write a DTD - Vivtek.
Below is an example XML document for the delivery of a podcast RSS feed. This document contains file information and the corresponding metadata for the channel and each show contained therein. The XML and all other files for a podcast are hosted from a web sever. The URL to this XML document is the URL pasted into the client's RSS reader.
![How To Write A Dtd For An Xml File](assets/images/icons/service-1.png)
When creating an XML document under the rules of a publicly distributed DTD, use PUBLIC. Otherwise, use the SYSTEM type declaration. The example below shows a prolog that would be used for an HTML document that is using an XML prolog. The DTD is publicly available thanks to the W3C.
![How To Write A Dtd For An Xml File](assets/images/icons/service-2.png)
I am working on writing a XML DTD to describe a data file. The file will contain some binary data. I understand that I can use Entity and Notation to do the job. But for some reason I have to make the file containing the binary data a XML document file. Could someone please tell me whether I can use PCDATA for the binary data directly or I.
![How To Write A Dtd For An Xml File](assets/images/icons/service-3.png)
To create an XML file, in the document, you can use a text editor (such as Notepad) and type units of code using normal characters. The XML document is made of units called entities. These entities are spread on various lines of the document as you judge them necessary and as we will learn.
![How To Write A Dtd For An Xml File](assets/images/icons/service-4.png)
To see the result, you can open the document in a web browser that accepts XML and can format with CSS. Figure 1-1 shows a screenshot of how it looks in Safari version 1.0 for Mac OS X. Figure 1-1. Screenshot of a CSS-formatted document.
![How To Write A Dtd For An Xml File](assets/images/icons/service-5.png)
On the other hand, when I encounter a new or complex dtd, I use the dtdtree to visually understand the dtd structure. And while writing xml documents conformant to a dtd, I use it as a reference. Say, while writing a svg file I need to find out the attributes of the line element type - all I need to do is check the svg dtdtree instead of poring though the svg specs to determine that.
![How To Write A Dtd For An Xml File](assets/images/icons/service-6.png)
Import XML File. The SSIS import process starts with creating a new SSIS solution and project in SQL Server Data Tools (SSDT formerly known as BIDS or Business Intelligence Design Studio). Be sure to name the new solution and project appropriately as shown below. Also, rename the package to a descriptive name.