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https://wiki.postgresql.org/wiki/XML_Support
Aug 25, 2010 · You should start with the PostgreSQL XML Data Type and PostgreSQL XML Functions documentation in the manual when getting started with PostgreSQL's XML support. This page discusses the planning of that work, which is now largely complete, rendering the following obsolete.
https://www.postgresql.org/docs/8.2/datatype-xml.html
8.14. XML Document Support. XML (Extensible Markup Language) support is not one capability, but a variety of features supported by a database system. These capabilities include storage, import/export, validation, indexing, efficiency of modification, searching, transforming, and XML to SQL mapping. PostgreSQL supports some but not all of these XML capabilities.
https://www.postgresql.org/docs/9.1/functions-xml.html
9.14.1. Producing XML Content. A set of functions and function-like expressions are available for producing XML content from SQL data. As such, they are particularly suitable for formatting query results into XML documents for processing in client applications.
https://www.postgresql.org/docs/9.3/datatype-xml.html
The xml type does not validate input values against a document type declaration (DTD), even when the input value specifies a DTD. There is also currently no built-in support for validating against other XML schema languages such as XML Schema. The inverse operation, producing a character string value from xml, uses the function xmlserialize:
https://wiki.postgresql.org/wiki/PostgreSQL_vs_SQL/XML_Standards
The data model and formal semantics of the redesigned languages are the terms used to specify the redesigned SQL/XML. SQL/XML support in PostgreSQL . PostgreSQL’s SQL/XML support follows the first, 2003 edition of the standard, with a few extensions …
https://www.postgresql.org/docs/current/functions-xml.html
The functions and function-like expressions described in this section operate on values of type xml.See Section 8.13 for information about the xml type. The function-like expressions xmlparse and xmlserialize for converting to and from type xml are documented there, not in this section.. Use of most of these functions requires PostgreSQL to have been built with configure --with-libxml.
https://www.w3resource.com/PostgreSQL/postgresql-xml-functions.php
The particular behavior for individual data types is expected to evolve in order to align the SQL and PostgreSQL data types with the XML Schema specification, at which point a more precise description will appear. ... except that it also offers support for a namespace mapping argument. Syntax: xpath_exists(xpath, xml [, nsarray]) Example.
https://stackoverflow.com/questions/7491479/xml-data-to-postgresql-database
Postgres has (thanks to Daniel Lyons for pointing it out) native XML support which you can use to store your table. If you however want to shred your XML data manually, there are different possibilities to represent XML data in a database.
https://www.researchgate.net/publication/221636717_XML_support_in_PostgreSQL
This paper presents the roadmap for the development of native XML type support in open source relational database system PostgreSQL [15]. Started five years ago as a "contrib" module ("contrib ...
https://tapoueh.org/blog/2018/04/postgresql-data-types-xml/
Apr 23, 2018 · Continuing our series of PostgreSQL Data Types today we’re going to introduce the PostgreSQL XML type.. The SQL standard includes a SQL/XML which introduces the predefined data type XML together with constructors, several routines, functions, and XML-to-SQL data type mappings to support manipulation and storage of XML in a SQL database, as per the Wikipedia page.
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