XML namespace
XML Schema instance
Four attributes an instance document uses to point at its schema or declare a nil value.
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"This namespace contributes no elements at all — only the attributes xsi:schemaLocation, xsi:noNamespaceSchemaLocation, xsi:type and xsi:nil, which a document being validated attaches to its own elements.
xsi:schemaLocation is a hint, not a guarantee: most validators only honour it when explicitly configured to, so a document that carries it may still validate against a completely different schema.
- URI
http://www.w3.org/2001/XMLSchema-instance- Prefix
xsi- Elements
- Contributes attributes only
Specification: W3C XML Schema Part 1
Get started
Bring order to the XML your team can't afford to ignore.
Create a free account and get a private workspace to search, validate, diff, and monitor your XML feeds, sitemaps, schemas, and vendor integrations.