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What is a complex type in XSD?

What is a complex type in XSD?

A complex type element is an XML element that contains other elements and/or attributes.

How do you make a complex type optional in XSD?

Using in an XSD The element in the root schema has to be optional. Add attribute minOccurs=”0″ on the element to make it optional.

What is simple type and complex type in XSD?

XSD elements can be of type simpleType , complexType , or anyType . An element of type simpleType contains only text. It cannot have attributes and elements. An element of type complexType can contain text, elements, and attributes.

What is complex type?

A complex type is a template for defining rich, structured properties on entity types or on other complex types. Each template contains the following: A unique name. ( Required) The name of a complex type cannot be the same as an entity type name within the same namespace.

What is a sequence complex type in XML?

What is complex content?

Definition and Usage The complexContent element defines extensions or restrictions on a complex type that contains mixed content or elements only.

What is maxOccurs in XSD?

The maxOccurs attribute specifies the maximum number of times that the element can occur. It can have a value of any positive integer greater than or equal to the value of the minOccurs attribute.

What is Nillable in XSD?

The presence of the xsd:nillable attribute in an XSD element means that the corresponding element in the XML file permits null values.

What is the difference between simple element and complex element?

Simple Element: An XML element with no attributes or sub (child) elements is known as a simple element….XML.

Simple Element Complex Element
A simple element can be declared with a simple datatype. A simple element can be declared with a complex datatype.
They contain self-closing tags. Do not contain self-closing tags.

What are simple and complex data types?

These datatypes are called simple types. They contain text but no other elements and attributes. You can derive new simple types from the basic XML simple types. You can create complex XML datatypes. A complex datatype is a datatype that contains more than one simple type.

What are complex data types in Ordbms?

A complex data type is usually a composite of other existing data types. For example, you might create a complex data type whose components include built-in types, opaque types, distinct types, or other complex types.

What are complex types in Entity Framework?

Complex types are non-scalar properties of entity types that enable scalar properties to be organized within entities. Like entities, complex types consist of scalar properties or other complex type properties.

XSD – Complex Types. Complex Element is an XML element which can contain other elements and/or attributes. We can create a complex element in two ways −. Define a complex type and then create an element using the type attribute.

Why can’t I use nested types in a document structure?

There are also cases where you can’t acheive certain document structures with nested types – an example of this is using two complexTypes in a sequence that can contain 0 to unbounded instances of each type, in any mixed order. This isn’t possible with nested types, but it is with referenced global types.

Do you prefer nested or global data types in schemas?

However, in larger schemas things can get very untidy and difficult to manage when the practice for choosing nested over global isn’t clearly defined. The obvious reasons for using global types (primarily reuse, also nesting) tend to dictate – in general I prefer one mode or the other.

What is the difference between text-only and mixed complex type elements?

Text-Only complex type element can only contain attribute and text. Mixed complex type element can contain element, attribute and text. Indicators controls the ways how elements are to be organized in an XML document.