If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. Report Error. Your message has been sent to W3Schools. W3Schools is optimized for learning and training. Working with XML maps. Using the XML Source task pane. Element types and their icons. Working with single-mapped cells.
Working with repeating cells in XML tables. XML map security considerations. Importing XML data. Working with an inferred schema. Exporting XML data. XML is a technology that is designed for managing and sharing structured data in a human-readable text file. XML follows industry-standard guidelines and can be processed by a variety of databases and applications. Using XML, application designers can create their own customized tags, data structures, and schemas.
In short, XML greatly eases the definition, transmission, validation, and interpretation of data between databases, applications, and organizations. Schema files. If XSLT files are linked to XML data files that you import into Excel, you do have the option to apply or not apply the formatting before the data is added to the worksheet, but only when you open an XML file by using the Open command from within Excel. By using XML and Excel, you can manage workbooks and data in ways that were previously impossible or very difficult.
By using XML maps, you can easily add, identify, and extract specific pieces of business data from Excel documents. For example, an invoice that contains the name and address of a customer or a report that contains last quarter's financial results are no longer just static reports. You can easily import this information from databases and applications, revise it, and export it to the same or other databases and applications. Extend the functionality of existing Excel templates by mapping XML elements onto existing cells.
This makes it easier to get XML data into and out of your templates without having to redesign them. The following diagram shows how the different files and operations work together when you use XML with Excel. Essentially, there are five phases to the process:. Adding an XML schema file. Importing an XML data file. Entering data, moving mapped cells, and leveraging Excel functionality, while preserving XML structure and definitions. Exporting revised data from mapped cells to an XML data file.
You can create or open a workbook in Excel, attach an XML schema file. Create optional elements - both mandatory and optional elements will be generated. Create first choice of required choice - the first option of a required choice will be generated in your XML file. Fill elements and attributes with data - any elements and attributes generated will be filled with sample data. With schemas we can define the number of possible occurrences for an element with the maxOccurs and minOccurs attributes.
The default value for both maxOccurs and minOccurs is 1! Now we can define the "item" element. This element can appear multiple times inside a "shiporder" element. This is specified by setting the maxOccurs attribute of the "item" element to "unbounded" which means that there can be as many occurrences of the "item" element as the author wishes.
Notice that the "note" element is optional. We have specified this by setting the minOccurs attribute to zero:. We can now declare the attribute of the "shiporder" element.
The previous design method is very simple, but can be difficult to read and maintain when documents are complex. The next design method is based on defining all elements and attributes first, and then referring to them using the ref attribute.
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