What is XML schema collection in SQL Server?

What is XML schema collection in SQL Server?

The XML schema collection stores the imported XML schemas and is then used to do the following: Validate XML instances. Type the XML data as it is stored in the database.

What is an XML collection?

An XML schema collection is a metadata object in the database that contains one or more XML Schema Definition (XSD) language schemas. It is used to validate xml data type instances. You can associate XML schema collections with xml data type instances in columns or variables.

Which of the following following is used for retrieving XML schema collections?

2. Which of the following following is used for retrieving XML Schema Collections? Explanation: Built-in function XML_SCHEMA_NAMESPACE yields an xml data type instance.

What is the requirement of XML schema explain?

The purpose of a schema is to define and describe a class of XML documents by using these constructs to constrain and document the meaning, usage and relationships of their constituent parts: datatypes, elements and their content, attributes and their values, entities and their contents and notations.

Is it easier to process XML than HTML?

Yes, XML is easier to process XML than HTML. XML is extensible because it is not a fixed format like HTML. It is easy to write programs which process XML document.

What is the main purpose of XML Schema?

The purpose of an XML Schema is to define the legal building blocks of an XML document: the elements and attributes that can appear in a document. the number of (and order of) child elements. data types for elements and attributes.

What is an XML Schema?

An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed by XML itself.

What is so good about XML?

In XML, data and markup is stored as text that you yourself can configure. If you like, you can use XML editors, as we’ll see, to create XML documents. The data is also not encoded in some way that has been patented or copyrighted, which some formats are, so it’s more accessible.

How to create XML Schema collection in SQL Server?

You can create XML schema collections in the database and associate them with variables and columns of xml type. To manage schema collections in the database, SQL Server provides the following DDL statements: CREATE XML SCHEMA COLLECTION (Transact-SQL) Imports schema components into a database.

What is the use of schema in SQL Server?

The query-processing engine also uses the schema for type checking and to optimize queries and data modification. Also, SQL Server uses the associated XML schema collection, in the case of typed xml, to validate the XML instance.

Where can I find the list of user-defined XML Schema collections?

XML schema collections are enumerated in the catalog view, sys.xml_schema_collections. The XML schema collection “sys” is defined by the system. It contains the predefined namespaces that can be used in all user-defined XML schema collections without having to load them explicitly. This list contains the namespaces for xml, xs, xsi, fn, and xdt.

How do I associate XSD schemas with a variable or column?

You can optionally associate XSD schemas with a variable or a column of xml type through an XML schema collection. The XML schema collection stores the imported XML schemas and is then used to do the following: Note that the XML schema collection is a metadata entity like a table in the database. You can create, modify, and drop them.