厳格なOLTPと高速なOLAPを両立 新RDBの特徴は厳格なOLTP（オンライントランザクション処理）が可能でありながら、ビッグデータ分析にも使用できる高いOLAP（オンライン分析処理）性能を有していることだ。OLTPとOLAPの両立はHTAP（Hybrid Transaction／Analytical Processing）と呼ぶ。OLTPで用いる行方向のデータは不揮発性メモリーを採用する主記憶（メインメモリー）に格納し、OLAP用の列方向のデータを2次記憶装置に格納する。2次記憶装置にも不揮発性メモリーを使用する。 OLTPに関しては、トランザクション処理の分野で一般的なベンチマークである「TPC-C」において1ノードで1000万トランザクション／秒（TPS）の達成を当面の目標とする。そしてトランザクション処理においては、一貫性と隔離性のレベルを示す「トランザクション分離レベル」が最も
Distributed SQL. Sub-second Queries on Live Operational Data Aggregations and ad-hoc queries. No pre-aggregation. Flexible schema. CrateDB is a real-time analytics database for live operational data. Built for teams who work with high-volume, high-cardinality data and cannot wait for ETL to catch up. Real-time industrial analytics Ingest millions of events per second from sensors and telemetry str
This is the February 2025 issue of the monthly DB-Engines Ranking of database management systems. You can find the complete and most up-to-date ranking at DB-Engines.com. RankDBMSScoreChanges1.Oracle1254.82-3.932.MySQL999.99+ 1.843.Microsoft SQL Server786.87-11.694.PostgreSQL659.62-3.795.MongoDB396.63-5.876.Redis157.91+ 4.556.Redis157.91+ 4.557.Snowflake155.58+ 1.688.Elasticsearch134.63-0.298.Elas
日々進歩するIT技術は、ともすると取り残されてしまいそうな勢いで進化の速度を高めています。そこでキーマンズネット編集部がお届けするのが「5分でわかる最新キーワード解説」。このコーナーを読めば、最新IT事情がスラスラ読み解けるようになることうけあい。忙しいアナタもサラっと読めてタメになる、そんなコーナーを目指します。今回のテーマは「NewSQL」。数ペタバイトまでデータが拡大しても、システム拡張はサーバ追加だけで済むという、従来のRDBでは考えられなかった特長を持っています！ 1.NewSQLとは？ 「Google検索やSNSのように最新情報を常に反映しながら、一方できちんと業務処理もできるデータベース」…そんなデータベースは、これまでありそうでなかった。最新データを迅速に反映することと、業務データに食い違いや間違いを絶対起こさないこととは両立するのが困難な命題だ。ところがその困難を軽々と乗
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CockroachDB is a cloud-agnostic, PostgreSQL compatible database built for modern applications that is the inevitable choice delivering unmatched uptime, scale and compliance - anywhere in the world. Trusted by industry leaders to solve their toughest data problems and build what’s next.From AI to fintech, CockroachDB powers business critical systems One platform. Four core advantages.Deploy and ru
What is Apache Cassandra? Apache Cassandra is an open source NoSQL distributed database trusted by thousands of companies for scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data.
Hello, I’m Kristof, a human being like you, and an easy to work with, friendly guy. I've been a programmer, a consultant, CIO in startups, head of software development in government, and built two software companies. Some days I’m coding Golang in the guts of a system and other days I'm wearing a suit to help clients with their DevOps practices. While SQL databases are insanely useful tools, their
Data Where You Need It Apache CouchDB ™ lets you access your data where you need it. The Couch Replication Protocol is implemented in a variety of projects and products that span every imaginable computing environment from globally distributed server-clusters, over mobile phones to web browsers. Store your data safely, on your own servers, or with any leading cloud provider. Your web- and native a
Olery was founded almost 5 years ago. What started out as a single product (Olery Reputation) developed by a Ruby development agency grew into a set of different products and many different applications as the years passed. Today we have not only Reputation as a product but also Olery Feedback, the Hotel Review Data API, widgets that can be embedded on a website and more products/services in the n
What is WebScaleSQL? WebScaleSQL is a collaboration among engineers from several companies that face similar challenges in running MySQL at scale, and seek greater performance from a database technology tailored for their needs. Our goal in launching WebScaleSQL is to enable the scale-oriented members of the MySQL community to work more closely together in order to prioritize the aspects that are
Adminer is available for: MySQL, MariaDB, PostgreSQL, CockroachDB, SQLite, MS SQL, Oracle. Others can be added via plugin: Elasticsearch, SimpleDB, MongoDB, Redis, Firebird, ClickHouse. Features, Requirements, Skins, References Screenshots Screencast about Adminer features and using plugins (19:31, by Srigi) Downloads Adminer 5.5.0 (.php, 504 kB), English only (.php, 325 kB) Adminer 5.5.0 for MySQ
What is HeidiSQL? HeidiSQL is free software for people who work with databases, and aims to be intuitive to use. "Heidi" lets you connect to a variety of databases, like MariaDB, MySQL, Microsoft SQL, PostgreSQL, SQLite, Interbase and Firebird. Once you are connected, you can edit data and structures in these databases. Invented in 2002 by Ansgar, HeidiSQL is still a popular tool for MariaDB and M
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