Explain the use of XML schema in the web designing application?

XML Schemas ensure that data can be communicated in a format that is universal. For example, different countries use different formats to display the date. Some countries put the month first, others put the day first, and some put the year first. The XML Schema for date requires that all dates be in YYYY-MM-DD format. Thus, everyone viewing XML data knows what the data is because they know it is written in XML Schema. XML Schema has a lot of built-in data types for defining data. To define data, XML Schema uses attributes. XML Schema attributes are somewhat similar to HTML attributes in that they are included within a tag, and the attribute further defines the tag. With HTML, an image tag would have a source attribute to provide the name of the file that contains the image to be displayed. Another example of an HTML attribute would be an alignment attribute within a paragraph tag that stipulates whether the paragraph should be aligned to the left or right. Examples of XML Schema attributes for describing data are string, decimal, boolean, integer, date, and time. One of the most important features of XML Schema is that it is replete with many different built-in restrictions that can be imposed on all data so that data is consistently displayed a certain way or presented in a certain format. Using XML Schema restrictions, a programmer can impose limits on upper or lower bounds for ranges of numbers, the length of numbers or the length of lists of items, and XML Schemas can even be used to define how white space is handled (tabs, line feeds, etc.).