xschoice vs xs:enumeration

[kri shan]

<xs:choice> and xs:enumeration looks same. How xs:enumeartion fdiffer from xs:cohice ?

[kri shan]

Hi Bartender, Please move this thread to

XML and related Technologies

[Ivan Krizsan]

Hi!
The <choice> element allows one of the elements contained in the <choice> element to be present in the containing element. Note that if you set maxOccurs to, for instance, 2 then you are allowed to choose two of elements inside the <choice> element.
Enumeration is a facet that you can use when defining a simple type. The enumeration facet allows you to provide a list of allowed values for the type in question.
If you want examples, please let me know!
Best wishes!

[kri shan]

Hi Ivan, can you give examples for allowing two elements inside the <choice> element ?

[Ivan Krizsan]

Hi!
The following XML schema allows one person to own at most two computers and requires the person to own at least one computer:
<?xml version="1.0" encoding="UTF-8"?> <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:chex="http://www.ivan.com/choiceExample" targetNamespace="http://www.ivan.com/choiceExample"> <element name="computer-owner" type="chex:ComputerOwner" /> <complexType name="ComputerOwner"> <sequence> <element name="name" type="string" /> <choice minOccurs="1" maxOccurs="2"> <element name="desktop" type="string" /> <element name="notebook" type="string" /> <element name="handheld" type="string" /> </choice> </sequence> </complexType> </schema>

The following XML fragment is valid according to the above schema:
<?xml version="1.0" encoding="UTF-8" ?> <brap:computer-owner xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:brap="http://www.ivan.com/choiceExample" xsi:schemaLocation="http://www.ivan.com/choiceExample choiceExampleSchema.xsd"> <name>Ivan</name> <notebook>MacBook</notebook> <desktop>Zuug 2000</desktop> </brap:computer-owner>
We can see that Ivan owns a MacBook, which is a notebook, and a Zuug 2000, which is a desktop computer - all in all two computers.
Best wishes!

[kri shan]

Hi Ivan, If i do not give minOccurs and maxOccurs in this line

<choice minOccurs="1" maxOccurs="2">

How choice will behave ?

[Ivan Krizsan]

Hi!
I answer your question with a question:
What are the default values for minOccurs and maxOccurs?
Best wishes!