CityJSON in combination with MongoDB, PostgreSQL and GraphQL

CityJSON is a JSON-based encoding for a subset of the CityGML data model and an alternative to the CityGML exchange-format. This new encoding reduces the data size and simplifies the usage. These files can be stored in relational and NoSQL databases. Relational and NoSQL databases have integrated JSON. CityJSON has therefore the potential to be...

Archiving AIS messages in a Geo-DBMS

This paper reports on the result of two studies for using a geographical database management system for archiving Automated Identification System (AIS) message data. In this paper, we analyse the storage (using MongoDB and PostgreSQL) and we give a more in-depth description of a possible data model for archiving messages based on the bit vector...

Projectcampus grading and review

This report describes, analyzes and evaluates the process around the design of the grading and review module and its development for the online learning environment Projectcampus. The module was developed as a bachelor’s project. This project is the last part of the bachelor phase of the computer science study of the Delft University of...

Toepassing van CQRS in combinatie met NoSQL

In dit onderzoek hebben we de voor- en nadelen van het gebruik van NoSQL databases en het Command Query Responsibility Segregation(CQRS) met Event Sourcing(ES) pattern onderzocht. In het onderzoek dat ingaat op de verschillende NoSQL databases zijn een groot aantal databases geselecteerd voor nader onderzoek. De vergelijking is gemaakt op basis...