An open source multi-tool for exploring and publishing data Datasette is a tool for exploring and publishing data. It helps people take data of any shape or size and publish that as an interactive, explorable website and accompanying API. Datasette is aimed at data journalists, museum curators, archivists, local governments, scientists, researchers and anyone else who has data that they wish to sh
3. Copyright©2016 NTT corp. All Rights Reserved. トランザクションの基本 トランザクションとは： データに対する一連の操作を一つにまとめた単位の事 トランザクションマネージャとは： 複数のトランザクションがACIDを守って走るよ うに管理する機構 A: Atomicity 結果がAll-or-Nothingとなる事 C: Consistency 一貫性を守る事 I: Isolation 過程が他の処理から見えない事 D: Durability 結果が永続化される事 Consistentな状態空間 Inconsistentな状態空間 Diskが取りうる全ての状態の空間 Atomicな遷移 4. Copyright©2016 NTT corp. All Rights Reserved. 何らかの実行順(スケジュール空間) 直列に実行した場合の結果
Problems with CAP, and Yahoo’s little known NoSQL system
Problems with CAP, and Yahoo’s little known NoSQL system Over the past few weeks, in my advanced database system implementation class I teach at Yale, I’ve been covering the CAP theorem, its implications, and various scalable NoSQL systems that would appear to be influenced in their design by the constraints of CAP. Over the course of my coverage of this topic, I am convinced that CAP falls far sh
Published by Martin Kleppmann on 11 May 2015. This blog post has been translated into Russian, Japanese, Chinese, and Chinese again. For more detail on problems with CAP, and a proposal for an alternative, please see my paper A Critique of the CAP Theorem. In his excellent blog post Notes on Distributed Systems for Young Bloods, Jeff Hodges recommends that you use the CAP theorem to critique syste
知っているようで知らないNeutron -仮想ルータの冗長と分散- - OpenStack最新情報セミナー 2016年3月 VirtualTech Japan Inc.
Radical Transparency for Your Programmatic Data Our interactive analytics tools put the full power of data navigation and visualization into the hands of marketers. CONTACT USLEARN MORE Let us Tell You Why, not What Traditional analytics tools tell you what is happening in your marketplace with predetermined data sets. Metamarkets is the only interactive analytics platform that gives you real-time
If all these new DBMS technologies are so scalable, why are Oracle and DB2 still on top of TPC-C? A roadmap to end their dominance.
(This post is coauthored by Alexander Thomson and Daniel Abadi) In the last decade, database technology has arguably progressed furthest along the scalability dimension. There have been hundreds of research papers, dozens of open-source projects, and numerous startups attempting to improve the scalability of database technology. Many of these new technologies have been extremely influential---some
People involved: Ioannis Alagiannis, Renata Borovica, Miguel Branco As data collections become larger and larger, even on a daily basis, the world is already caught in the era of data deluge where we have much more data than what we can move, store, let alone analyze. Although Database Management Systems (DBMS) remain overall the predominant data analysis technology by providing unparalleled flexi
1. Database Research on Modern Computing Architecture September 10, 2010 Kyong-Ha Lee (bart7449@gmail.com) Department of Computer Science KAIST, Daejeon, Korea 2. Brief Overview of This Talk Basic theories and principles about database technology on modern HW • Not much discussion on implementation or tools, but will be happy to discuss them if there are any questions Topics • The immense chan
Welcome to the web presence of the Database Research Group at University of Tübingen. Our group pursues a variety of “all-time classic” database research questions—prime examples include query language design, translation, and optimization—but with a few twists: We are particularly interested in the design, compilation, and optimization of expressive database languages that support rich data model
The document discusses graph databases and their properties. Graph databases are structured to store graph-based data by using nodes and edges to represent entities and their relationships. They are well-suited for applications with complex relationships between entities that can be modeled as graphs, such as social networks. Key graph database technologies mentioned include Neo4j, OrientDB, and T
Apache MADlib: Big Data Machine Learning in SQL Open source, commercially friendly Apache license For PostgreSQL and Greenplum Database® Powerful machine learning, graph, statistics and analytics for data scientists Getting Started with Apache MADlib using Jupyter Notebooks We have created a library of Jupyter Notebooks to help you get started quickly with MADlib. It includes many commonly used al
Overview Kyoto Cabinet is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. Each key must be unique within a database. There is neither concept of data tables nor data types. Record
Last year I had a chance to talk about the internals of our service: Pathtraq at Percona Performance Conference (slides), in which I described the methods we use to compress the URLs in our database to below 40% of the original size, however had not released the source code since then. I am sorry for the delay, but have finally uploaded the code to github.com/kazuho/url_compress. It is generally
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