A teaching-oriented, open-source database system and accompanying set of Jupyter notebooks designed around understandability rather than raw performance. It packages a didactic DBMS implemented in Python (system/), lecture materials (Database Systems 2024/25), and interactive notebooks grouped by topic that can be launched via Binder. Environment management uses uv to provision Python 3.12 and dependencies; instructions show cloning, uv sync, and running Jupyter, and unit tests run via unittest. Licensed under AGPL-3.0, the project lists several academic contributors led by Jens Dittrich and credits an AI coding assistant, Claude, as a co-author on commits.
The codebase exposes concrete implementations and visualizations of core DB concepts: a storage hierarchy with DRAM/cache/SSD/disk and RAID assignment plus a reliability/performance cost model; indexes including a B+‑tree, bitmap indexes with WAH compression, Bloom filters, radix tries and a buffered “Christmas tree,” and a Recursive-Model-Index (learned index); bit-sequence utilities; a versioned key-value store with MVCC and journaling; query-processing operators (scan, filter, hash join, semi-join, count), external merge sort and queues, and query-optimization modules (join-graph types, cardinality estimation, C_out cost, and DP-based plan enumeration like DPsize/DPsub/DPccp). Tests and API documentation are provided to support exploration and teaching.
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Amazon has invested over $1 billion to suppress dissent related to its data centers. The company's efforts focus on controlling opposition and managing public perception of its infrastructure projects. (theregister.com)
An open-source project has developed a 100% Rust-based clean-room clone of seven Adobe applications. Network security restrictions currently prevent access to related content. (reddit.com)
President Trump consulted Elon Musk’s AI chatbot Grok before orchestrating the capture of Venezuela’s president, Nicolás Maduro, in 2026. The chatbot provided insights on Venezuelan public reaction to Maduro’s potential removal. (independent.co.uk)
Edward Coristine, known as 'Big Balls,' is an American programmer born in 2005 who was appointed to the Department of Government Efficiency during Donald Trump's presidency. He is connected to Elon Musk and has a background in mechanical engineering and physics from Northeastern University. (en.wikipedia.org)
ProPublica investigation reveals that private schools can be easily founded with minimal requirements, such as filling out a form and paying a fee, without background checks or proof of education. The ease of establishing microschools raises concerns about oversight and accountability in private education. (propublica.org)
Donald Trump asked Grok how Venezuelans would react if the U.S. captured Maduro. The conversation highlights Trump's interest in Venezuela's political situation and potential responses to such actions. (time.com)
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