AWS Database Blog

Ora Lassila

Author: Ora Lassila

Ora Lassila is a Principal Graph Technologist in the Amazon Neptune graph database group. He has a long experience with graphs, graph databases, ontologies, and knowledge representation, and was a co-author of the original RDF specification. He holds a PhD in Computer Science, but his daughters do not think he is a real doctor, the kind who helps people. Twitter: @oralassila

Build and deploy knowledge graphs faster with RDF and openCypher

Amazon Neptune Analytics now supports openCypher queries over RDF graphs. When you build an application that uses a graph database such as Amazon Neptune, you’re typically faced with a technology choice at the start: There are two different types of graphs, Resource Description Framework (RDF) graphs and labeled property graphs (LPGs), and your choice of […]

Write a cascading delete in SPARQL

Customers often manage tree structures in their graph applications. Typical examples include categories of topics in a knowledge graph, relationships between people in an identity graph, or transaction networks in a financial application. Often, the structures are actually forests (collections of trees) with shared subtrees. In these applications, you frequently need to traverse a tree, […]