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Athanassios Hatzis
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The Atomic Information Resource Data Model - AIR

Started Mar 21, 2015 0 Replies

The relational and the entity-relationship model made a huge impact in the IT world for nearly half a century. But during this long period of standardization it meant also one thing, everyone had to…Continue

Tags: rdf, xml, nosql, database, model

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Howard Fulks liked Athanassios Hatzis's blog post Data Modelling Topologies of a Graph Database
yesterday
Athanassios Hatzis posted a blog post

Data Modelling Topologies of a Graph Database

The associative data graph database model is still a heavy hitter, stacking up well against property graphs and triples/quadruples. Expect a comeback.DefinitionThere is a lot of confusion with the definition of graph databases. In my opinion, any definition that avoids any reference to the semantics of nodes and edges or their internal structure is preferable. Failing to follow this guideline, it is unavoidable to favor specific implementations, e.g. …See More
Monday
Athanassios Hatzis's blog post was featured

Data Modelling Topologies of a Graph Database

The associative data graph database model is still a heavy hitter, stacking up well against property graphs and triples/quadruples. Expect a comeback.DefinitionThere is a lot of confusion with the definition of graph databases. In my opinion, any definition that avoids any reference to the semantics of nodes and edges or their internal structure is preferable. Failing to follow this guideline, it is unavoidable to favor specific implementations, e.g. …See More
Monday
Athanassios Hatzis replied to Vincent Granville's discussion SQL to NoSQL translator
"@Vincent you mentioned that "you are trying to get SQL to work much faster, and integrate legacy SQL code into NoSQL environments". Which NoSQL environment in particular, document based, property graph, big tables, RDF triple stores ?…"
May 25
Athanassios Hatzis's discussion was featured

R3DM/S3DM : A SEMIOTIC Data Modelling Framework

A complete 360 degrees view of a Supplier-Part-Catalog business model case visualized with a hypergraph. HYPERATOMS (green nodes) represent Attributes instances and HYPERBONDS (red nodes) represent Entities instances (tuples). In particular a Part with the description Acme Widget Washer is produced in either Silver or Red color and it…See More
May 12
Athanassios Hatzis posted a discussion

R3DM/S3DM : A SEMIOTIC Data Modelling Framework

A complete 360 degrees view of a Supplier-Part-Catalog business model case visualized with a hypergraph. HYPERATOMS (green nodes) represent Attributes instances and HYPERBONDS (red nodes) represent Entities instances (tuples). In particular a Part with the description Acme Widget Washer is produced in either Silver or Red color and it…See More
May 12
Athanassios Hatzis updated their profile
May 9
Athanassios Hatzis commented on Athanassios Hatzis's blog post A Quick Guide on How to Prevail in the Graph Database Arena
"Jon, thank you for your nice comments. You are right, RDBMS is well established and judging from a decade history of a full of promises RDF/OWL standard and triple DBMS that were based on this I find a lot of truth in your arguments ! I am not…"
Mar 20
Jon Reade commented on Athanassios Hatzis's blog post A Quick Guide on How to Prevail in the Graph Database Arena
"An informative article, thank you. But that's quite a bold claim in the Epilogue. Much as I appreciate the usefulness of graph databases, and their ability to process relationships between business entities, and the business need to do this,…"
Mar 20
Lindsay Parrish liked Athanassios Hatzis's blog post A Quick Guide on How to Prevail in the Graph Database Arena
Mar 16
Athanassios Hatzis's blog post was featured

A Quick Guide on How to Prevail in the Graph Database Arena

IntroductionThere are endless discussions on the databases arena about which DBMS is best suited for operational or data warehousing analytics, which one is the most efficient for online transaction processing, or which one is suitable for semantic integration. Recently graph databases are growing in popularity, especially in the enterprise space, and perhaps that adds more headache on those vendors that try to differentiate from competition and on those clients that are completely uncertain…See More
Mar 15
Athanassios Hatzis posted a blog post

A Quick Guide on How to Prevail in the Graph Database Arena

IntroductionThere are endless discussions on the databases arena about which DBMS is best suited for operational or data warehousing analytics, which one is the most efficient for online transaction processing, or which one is suitable for semantic integration. Recently graph databases are growing in popularity, especially in the enterprise space, and perhaps that adds more headache on those vendors that try to differentiate from competition and on those clients that are completely uncertain…See More
Mar 15
Mathieu Landry liked Athanassios Hatzis's blog post Towards a New Data Modelling Architecture - Part 2
Oct 17, 2016
Athanassios Hatzis's blog post was featured

Towards a New Data Modelling Architecture - Part 2

Atomic Information Resource (AIR)How do we design a data model, how do we connect data, how do we represent information, how do we store or retrieve them ? These are all fundamental questions in data modeling but there is a common key to unlock them. You have to start by defining a primitive information resource, and then understand how one can build complex information structures on top of these fundamental units. And this is because everything in nature or systems follow this kind of…See More
Oct 14, 2016
Athanassios Hatzis posted a blog post

Associative Data Modeling Demystified - Part1

Relation, Relationship and AssociationWhile most players in the IT sector adopted Graph or Document databases and Hadoop based solutions, Hadoop is an enabler of HBase column store, it went almost unnoticed that several new DBMS, AtomicDB previous database engine of …See More
Sep 9, 2016
Athanassios Hatzis's blog post was featured

Associative Data Modeling Demystified - Part2

Association in Topic Map Data ModelIntroductionIn the previous article of this series we examined the association construct from the perspective of Entity-Relationship data model. In this post we demonstrate how Topic Map data model represents associations. In order to link the two we continue with another SQL query from our relational…See More
Sep 9, 2016

Profile Information

Short Bio
Dr. Athanassios Hatzis is the founder of HEALIS, an international alliance of independent professionals and consultants in the emerging field of data science. He has been a Health Information Technology Managing Director in the Department of Neurosurgery in the University of Athens situated at “Evangelismos” General Hospital for four years. Besides his Health IT management skills, Athanassios I. Hatzis has a strong research background in clinical applications of Speech Technology. He has spent ten years on research and education in top U.K universities and he has published both in Speech Technology and neurotechnology sectors in peer reviewed journals and conferences. He is currently active in database modelling and semantic web technology.
My Web Site Or LinkedIn Profile
http://healis.eu
Field of Expertise
Analytics, Data Integration, Visualization, BI, Data Science
Professional Status
Consultant
Years of Experience:
10+
Your Company:
healis.eu
Industry:
IT
Your Job Title:
IT Expert & Research Scientist/Engineer
How did you find out about DataScienceCentral?
LinkedIn
Interests:
Finding a new position, Networking, New venture

Athanassios Hatzis's Blog

Data Modelling Topologies of a Graph Database

Posted on June 17, 2017 at 3:00am 0 Comments

The associative data graph database model is still a heavy hitter, stacking up well against property graphs and triples/quadruples. Expect a comeback.

Definition

There is a lot of confusion with the definition of graph databases. In my opinion, any definition that avoids any reference to the semantics of nodes and edges or their internal structure…

Continue

A Quick Guide on How to Prevail in the Graph Database Arena

Posted on February 13, 2017 at 10:30pm 2 Comments

Introduction

There are endless discussions on the databases arena about which DBMS is best suited for operational or data warehousing analytics, which one is the most efficient for online transaction processing, or which one is suitable for semantic integration. Recently graph databases are growing in popularity, especially in the enterprise space, and perhaps that adds more headache on those vendors that try to differentiate from competition…

Continue

Towards a New Data Modelling Architecture - Part 2

Posted on October 12, 2016 at 12:30am 0 Comments

Atomic Information Resource (AIR)

How do we design a data model, how do we connect data, how do we represent information, how do we store or retrieve them ? These are all fundamental questions in data modeling but there is a common key to unlock them. You have to start by defining a primitive information resource, and then understand how one can build complex information structures on top of…

Continue

Associative Data Modeling Demystified - Part1

Posted on September 7, 2016 at 4:00am 0 Comments

Relation, Relationship and Association

While most players in the IT sector adopted Graph or Document databases and Hadoop based solutions, Hadoop is an enabler of HBase column store, it went almost unnoticed that several new DBMS, AtomicDB previous database engine of …

Continue

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