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| <title>XML tools - overview</title> |
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| <h1 class="topictitle1">XML tools - overview</h1> |
| <div><p>This product provides a comprehensive visual XML development environment. |
| The tool set includes components for building DTDs, XML schemas, and XML files.</p><p>The following XML tools are available:</p> |
| <p>The <b>XML editor</b> is a tool for creating and viewing XML files. You |
| can use it to create new XML files, either from scratch, existing DTDs, or |
| existing XML schemas. You can also use it to edit XML files, associate them |
| with DTDs or schemas, and validate them.</p> |
| <p>The <b>DTD editor</b> is a tool for creating and viewing DTDs. </p> |
| <p>The <b>XML schema editor</b> is a tool for creating, viewing, and validating |
| XML schemas. You can use the XML schema editor to perform tasks such as creating |
| XML schema components and importing and viewing XML schemas. </p> |
| <div class="skipspace">Exercise caution when opening large files with any of the XML editors. |
| If the memory limits of the workbench are exceeded, it will abruptly close |
| without saving any data (and without warning or error messages). The number |
| of elements in an XML file, not its size, is the best indicator of how much |
| memory will be required. Memory requirements also depend on what else is open |
| in the workbench - in some cases you can open a 15 megabytes file, but in |
| other cases a one-megabyte file may cause problems. Therefore, we recommend |
| you save all data in the workbench before opening large XML files. This is |
| a permanent restriction.</div> |
| <div class="skipspace"><p>The |
| behavior of the XML parser when encountering an unresolvable URI (for example, |
| in a DOCTYPE declaration) is to report a fatal IO error and stop any further |
| processing. An unresolved URI is seen neither as a syntactic nor a semantic |
| error and as such, the parser does not attempt to handle it. Essentially, |
| the document remains unchecked. This is a known problem.</p> |
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