An XML map and its data source information are saved with the Excel workbook, not a specific worksheet. Furthermore, if you save your workbook as a macro-enabled Excel Office Open XML Format File, this map information can be viewed through Microsoft Notepad or through another text-editing program. If you want to keep using the map information but remove the potentially sensitive data source information, you can delete the data source definition of the XML schema from the workbook, but still export the XML data, by clearing the Save data source definition in workbook check box in the XML Map Properties dialog box, which is available from the Map Properties command in the XML group on the Developer tab.
If you delete a worksheet before you delete a map, the map information about the data sources, and possibly other sensitive information, is still saved in the workbook. If you are updating the workbook to remove sensitive information, make sure that you delete the XML map before you delete the worksheet, so that the map information is permanently removed from the workbook.
When you import data, you bind the data from the file to an XML map that is stored in your workbook. Validate data against schema for import and export Specifies whether Excel validates data against the XML map when importing data. Overwrite existing data with new data Specifies whether data is overwritten when you import data. Click this option when you want to replace the current data with new data, for example, when up-to-date data is contained in the new XML data file.
Append new data to existing XML tables Specifies whether the contents of the data source are appended to the existing data on the worksheet. Click this option, for example, when you are consolidating data from several similar XML data files into an XML table, or you do not want to overwrite the contents of a cell that contains a function. When you import XML data, you may want to overwrite some mapped cells but not others.
For example, some mapped cells may contain formulas and you don't want to overwrite the formula when you import an XML file. There are two approaches that you can take:. Unmap the elements that you don't want overwritten, before you import the XML data. After you import the XML data, you can remap the XML element to the cells containing the formulas, so that you can export the results of the formulas to the XML data file.
In this "Import" XML map, don't map elements to the cells that contain formulas or other data that you don't want overwritten. Use another XML map for exporting the data. If you open a workbook that was created in Excel , you can still view the data, but you cannot edit or refresh the source data. The inferred schema is stored with the workbook, and the inferred schema allows you to work with XML data if an XML schema file isn't associated with the workbook.
Select the Preview Data in Task Pane option from the Options button to display the first row of data as sample data in the element list, if you imported XML data associated with the XML map in the current session of Excel. You cannot export the Excel inferred schema as a separate XML schema data file.
Although there are XML schema editors and other methods for creating an XML schema file, you may not have convenient access to them or know how to use them. You export XML data by exporting the contents of mapped cells on the worksheet. When you export data, Excel applies the following rules to determine what data to save and how to save it:. Empty items are not created when blank cells exist for an optional element, but empty items are created when blank cells exist for a required element.
Excel overwrites existing namespace prefixes. The default namespace is assigned a prefix of ns0. Excel has a defined XML schema that defines the contents of an Excel workbook, including XML tags that store all workbook information, such as data and properties, and define the overall structure of the workbook.
For example, developers may want to create a custom application to search for data in multiple workbooks that are saved in the this format and create a reporting system based on the data found. You can always ask an expert in the Excel Tech Community or get support in the Answers community. Import XML data. Export XML data.
Append or overwrite mapped XML data. Need more help? Expand your skills. Get new features first. Was this information helpful? So what exactly is a markup language? Markup is information added to a document that enhances its meaning in certain ways, in that it identifies the parts and how they relate to each other. More specifically, a markup language is a set of symbols that can be placed in the text of a document to demarcate and label the parts of that document.
A programming language consists of grammar rules and its own vocabulary which is used to create computer programs. These programs instruct the computer to perform specific tasks. XML does not qualify to be a programming language as it does not perform any computation or algorithms. XML is commonly used for documents that are in multiple languages or where there are multiple variants that serve the needs of different users.
XML can, for example, be used to differentiate learning content for visually impaired learners. You simply create rules that will determine how the data is handled by different applications. One other potential advantage to using XML is that some processing can be moved client-side as opposed to server-side.
In HTML, you use tags that are pre-determined and have been defined in the language standard. With XML, you get to define your own tags. XML is designed in a way that allows individual industries to use their own vocabulary and create their own document structures. XML is used for data and content management in many industries. Industries have created their own standards for XML documents.
A number of new languages have been based off XML. They are designed to meet the very specific needs of particular industries. XML can be an efficient way of storing video and other multimedia.
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