SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.

⛈️ RumbleDB 1.21.0 "Hawthorn blossom" 🌳 for Apache Spark | Run queries on your large-scale, messy JSON-like data (JSON, text, CSV, Parquet, ROOT, AVRO, SVM...) | No install required (just a jar to download) | Declarative Machine Learning and more

Query processor with proven optimizations, ready to use for your document store to query semi-structured data with a JSONiq like extension of XQuery. Can also be used as an ad-hoc in-memory query processor.

Unity DGMS is an analytics runtime environment for decision guidance systems.

MINLPLib.jq is a JSONiq library of Mixed-Integer and Continuous Nonlinear Programming Instances in the native DGAL format.

Weekly programming exercises for the ETH course "Big Data for Engineers" (Spring 2021).

Understanding various topics related to data and Web. These include REST and GraphQL API development, Web access to databases, XML and related technologies, JSON and related technologies, Semantic Web including Description Logics, RDF, RDFS, OWL, and SPARQL, and NoSQL systems. I worked on several programming projects which illustrate the various…