Cristian Vasquez cristianvasquez

Transforming XML to RDF through RDB

When generating notice/RDF, the ted-rdf-mapping-eforms repository map N source schemas to a single target ontology (v4.0), resulting in N individual mappings. With each update to the ontology, all N mappings must also be updated, adding complexity and cost.

By introducing an intermediate model as a pivot, we can simplify ontology upgrades. The concept is to map the N source schemas to the pivot, and then map the pivot to RDF. This reduces the number of mappings to maintain during Ontology upgrades to one.

One approach for this pivot model is to use an in-memory relational database (RDB), where the XML data is mapped to relational tables. RDF can then be produced from the relational schema using a mapping language such as R2RML.

This method will enhance performance and clarity in the mapping process.

Transform using RML

Get the mappings

First, clone or download this repository

git clone https://github.com/OP-TED/ted-rdf-mapping-eforms.git

	<script setup>

	import { onMounted } from 'vue'

	onMounted(() => {
	const rotatable = document.getElementById('rotatable')
	let isDragging = false
	let previousX = 0
	let previousY = 0
	let currentRotationX = 0

	@prefix cccev: <http://data.europa.eu/m8g/> .
	@prefix dct: <http://purl.org/dc/terms/> .
	@prefix epd: <http://data.europa.eu/a4g/resource/> .
	@prefix epo: <http://data.europa.eu/a4g/ontology#> .
	@prefix locn: <http://www.w3.org/ns/locn#> .
	@prefix org: <http://www.w3.org/ns/org#> .
	@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
	@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
	@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
	@prefix rr: <http://www.w3.org/ns/r2rml#> .

	@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
	@prefix : <http://joinup.ec.europa.eu/collection/access-base-registries/solution/abr-specification-registry-registries#> .
	@prefix adms: <http://www.w3.org/ns/adms#> .
	@prefix cc: <http://creativecommons.org/ns#> .
	@prefix dc: <http://purl.org/dc/elements/1.1/> .
	@prefix dcat: <http://www.w3.org/ns/dcat#> .
	@prefix dct: <http://purl.org/dc/terms/> .
	@prefix foaf: <http://xmlns.com/foaf/0.1/> .
	@prefix locn: <http://www.w3.org/ns/locn#> .
	@prefix org: <http://www.w3.org/ns/org#> .

	@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
	@prefix time: <http://www.w3.org/2006/time#> .
	@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
	@prefix schema: <http://schema.org/> .

	<http://data.europa.eu/a4g/vocabulary/time/one-year> a time:DurationDescription ;
	rdfs:comment "A duration of one year"@en ;
	schema:name "1 year"@en ;
	time:years "1"^^<http://www.w3.org/2001/XMLSchema#decimal> .

	PREFIX qb: <http://purl.org/linked-data/cube#>
	PREFIX ex: <http://data.europa.eu/exchange-rates/ontology#>
	PREFIX dmx-concept: <http://purl.org/linked-data/sdmx/2009/concept#>
	PREFIX sdmx-code: <http://purl.org/linked-data/sdmx/2009/code#>
	PREFIX sdmx-dimension: <http://purl.org/linked-data/sdmx/2009/dimension#>
	PREFIX sdmx-attribute: <http://purl.org/linked-data/sdmx/2009/attribute#>
	PREFIX sdmx-measure: <http://purl.org/linked-data/sdmx/2009/measure#>
	PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
	PREFIX xyz: <http://sparql.xyz/facade-x/data/>
	PREFIX fx: <http://sparql.xyz/facade-x/ns/>

	name: Deploy Vue site to Pages

	on:
	# Runs on pushes targeting the default branch
	push:
	branches: ["main"]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	@prefix ex:
	<http://example.org/> .

	ex:aliceGraph {
	ex:Alice ex:name "Alice" ;
	ex:knows ex:Bob .
	}

	ex:bobGraph {
	ex:Bob ex:name "Bob" .

	from IPython.core.display import display, HTML
	from rdflib import Graph
	from pyvis.network import Network
	import hashlib

	def generate_id(value):
	"""Generate a unique ID for each RDF term."""
	return hashlib.md5(str(value).encode()).hexdigest()

	def graph_html(g):