In this page we have discussed (i) various supported data types and (ii) how different types (schemas) are organized and (iii) what are different types, text and URLs are expected to be.
The following table describes various types of data supported by Schema.org :
|Boolean||True or False.|
|Date||A date value in ISO 8601 date format. According to this format, today (and this time) will be like following :
Date : 2017-08-16
Separate date and time in UTC: : 2017-08-16 21:42Z
Combined date and time in UTC : 2017-08-16T21:42Z
Date with week number : 2017-W33-08
Ordinal date : 2017-227
|Number||Specifies a number. Maybe a floating number (e.g. 21.56) or an integer (e.g. 87).|
|Text||Specifies a text. It may be a URL (e.g. http://www.example.com/).|
Schema.org offers a variety of types called as schemas and their properties to describe different types of content.
In this section of the tutorial, we will discuss all these in detail with lots of examples.
Schema.org organizes schemas in a hierarchy. This allows you to associate a schema with a content from a very broad perspective to a very specific one. The following discusses that.
Thing is the most generic type available.
|description||Text||Specifies a short description of an item.|
|image||URL||Specifies a URL of the image of an item.|
|name||Text||Specifies the name of an item.|
|url||URL||Specifies the URL of an item.|
In the next level in the hierarchy, there are seven schemas. Each of which has more schemas. The following table gives a basic idea of these.
|CreativeWork||Specifies that the associated content is a creative work, for example, books, movies, photographs, software programs, etc.|
|Event||Specifies that the associated content is an event happening at a certain time at a certain location.|
|Intangible||Specifies that the associated content is about something intangible, like quantities, structured values, etc.|
|Organization||Specifies that the associated content is about an organization like a School, a Club, a Corporate House etc.|
|Person||Specifies that the associated content is about a person. He / she may be alive, dead or even fictional.|
|Place||Specifies that the associated content is about a place. The place must be a fixed, physical entity.|
|Product||Specifies that the associated content is about a product, anything which is sellable. For example a PC, an Apartment, A Car etc.|
Schema.org offers a guideline for what should be the Types, Text and URLs look like.
The more content you markup, it's better. But you should not markup anything which is not visible to your visitor. For example, if you have a piece of text as code documentation, which you have commented, that is not visible to your visitor, so it should not be marked up.
The value of the property can itself be an embedded item. But that is not mandatory. You can also have a child type embedded as expected type. For example, for a content, if the expected type is Event, you can use it's child type BusinessEvent if you find it appropriate.
Use 'url' property. See the code bellow :
<div itemscope itemtype="http://schema.org/CreativeWork"> <a href="http://www.w3resource.com/php/php-home.php" itemprop="url">PHP Tutorial</a> </div> <div itemscope itemtype="http://schema.org/CreativeWork"> <a href="http://www.w3resource.com/mysql/mysql-tutorials.php" itemprop="url">MySQL Tutorial</a> </div>
Each entry links to an associated work. So 'url' property is used to link to that.