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ForerunnerDB
HIGH PERFORMANCE IN-BROWSER DATABASE, EASY TO USE POWERFUL JSON QUERY LANGUAGE, ADVANCED MODEL-VIEW DATA BINDING, PERSISTENT STORAGE ACROSS PAGE LOADS, BUILT FOR WEBSITES AND WEB APPLICATIONS, GET UP AND RUNNING IN SECONDS DOWNLOAD DEMO AWESOME FEATURES AND MODERN API ForerunnerDB is the only JavaScript database with a simple, rich JSON-based query language. Based on MongoDB's query language and b
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トレンド調査ラボã®é’木峰郎（id:mineroaoki）ã§ã™ã€‚ 好ããªRubyã®ãƒ¡ã‚½ãƒƒãƒ‰ã¯10å¹´å‰ã‹ã‚‰String#slice(re, nth)ã§ã™ãŒã€ 最近ã¯RubyよりCoffeeScriptã¨SQLã®ã»ã†ãŒæ›¸ãé‡ãŒå¤šãã¦æ‚©ã‚“ã§ã„ã¾ã™ã€‚ 今日ã¯ã‚ãŸã—ãŒé–‹ç™ºã—ã¦ã„る「ãŸã¹ã¿ã‚‹ã€ã®èƒŒå¾Œã§åƒã„ã¦ã„ã‚‹ 巨大ãƒãƒƒãƒã®æ§‹æˆã«ã¤ã„ã¦è©±ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ãŸã¹ã¿ã‚‹ã®ãƒãƒƒãƒã¯ç´„3000è¡Œã®SQLã§æ§‹æˆã•ã‚Œã¦ãŠã‚Šã€ 処ç†æ™‚é–“ãŒ1æ—¥ã§4時間程度ã‹ã‹ã‚‹ã€ãã“ãã“ã®è¦æ¨¡ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã§ã™ã€‚ ã“ã®ãƒãƒƒãƒå‡¦ç†ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’Bricolage（ブリコラージュ）ã¨ã„ã†ãƒ•ãƒ¬ãƒ¼ãƒ ワークã§æ§‹é€ 化ã™ã‚‹æ‰‹æ³•ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ 「ãŸã¹ã¿ã‚‹ã€ã¨ã¯ ã¾ãšæœ€åˆã«ã€ã€ŒãŸã¹ã¿ã‚‹ã€ãŒã©ã†ã„ã†ã‚‚ã®ãªã®ã‹ã”ãç°¡å˜ã«ãŠè©±ã—ã—ã¦ãŠãã¾ã—ょã†ã€‚ 「ãŸã¹ã¿ã‚‹ã€ã¯ä¼æ¥ã®ã¿ã«æä¾›ã—ã¦ã„ã‚‹B2Bã®åˆ†æžã‚µãƒ¼ãƒ“スã§ã€ クックパッドã®ãƒ¬ã‚·ãƒ”検索ã®åˆ†æžã‚’ã™ã‚‹ã“ã¨ãŒã§ãã¾
MySQL 互æ›ã®DBã€Percona Server を使ã†ç†ç”± - Qiita
# Time: 120114 6:34:33 # User@Host: user[user] @ [10.10.10.10] # Thread_id: 28313080 Schema: mydb Last_errno: 0 Killed: 0 # Query_time: 0.588882 Lock_time: 0.000068 Rows_sent: 3 Rows_examined: 183839 Rows_affected: 0 Rows_read: 100 # Bytes_sent: 121 Tmp_tables: 0 Tmp_disk_tables: 0 Tmp_table_sizes: 0 /+ Percona Server 独自ã®ãƒã‚° +/ # InnoDB_trx_id: 9903E4DB1 # QC_Hit: No Full_scan: No Full_join: No Tmp
リアルタイムã¨ãƒãƒƒãƒã®é•ã„ - kuenishi's blog
昨日ã€åˆ†æ•£DB本èªæ›¸ä¼šã®ã‚ã¨ã«å“å·ã®ãƒ©ãƒ¼ãƒ¡ãƒ³å±‹ã§ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ã¨ã¯ä½•ãžã‚„〜ã¿ãŸã„ãªè©±ã«ãªã£ãŸã€‚自分ã®æ€ã„ã¤ã„ãŸãƒã‚¨ãƒ ã‚’ã“ã“ã«æ›¸ã„ã¦ãŠã“ã†ã€‚ç¾å ´ã®å•é¡Œã¨ã¯ã‚ã¾ã‚Šé–¢ä¿‚ãŒãªã„。 Stream Data Processing: A Quality of Service Perspective (Advances in Database Systems)ã¨ã„ã†æœ¬ã«ã‚ˆã‚Œã°ã€DSMS (Data Steram Management System) ã¨DBMS (Database Management System)ã®é•ã„ã¯ã€ã‚¯ã‚¨ãƒªã‚’発行ã™ã‚‹ãƒ‡ãƒ¼ã‚¿é›†åˆã®æ€§è³ªã«ã‚る。ã¤ã¾ã‚Šã€DBMSã¯ä»Šã‚る有é™ã®ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã—ã¦æ“作を行ã†ãŸã‚ã®ä»•çµ„ã¿ã§ã€DSMSã¯ã“ã‚Œã‹ã‚‰ã‚„ã£ã¦ãã‚‹ç„¡é™ã®ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã—ã¦æ“作を行ã†ãŸã‚ã®ä»•çµ„ã¿ã¨å®šç¾©ã•ã‚Œã¦ã„ãŸã€‚ã“ã®DSMSã¨ã„ã†ã‚„ã¤ã¯ã€å¤å¼ã‚†ã‹ã—ã„ストリーム処ç†ã‚·ã‚¹ãƒ†ãƒ ã®ã“ã¨ã§ã€ã¾ã‚ã„ã‚ゆるCEP
(JP) GPGPUãŒPostgreSQLã‚’åŠ é€Ÿã™ã‚‹
2. 自己紹介 â–Œåå‰: 海外 浩平 ▌所属： NEC OSS推進センター ▌好ããªã‚‚ã®ï¼š コアã®å¤šã„プãƒã‚»ãƒƒã‚µ ▌嫌ã„ãªã‚‚ã®ï¼š コアã®å°‘ãªã„プãƒã‚»ãƒƒã‚µ ▌経æ´: ï¬HPC  OSS/Linux  SAP  GPU/PostgreSQL â–ŒTw: @kkaigai ▌主ãªä»•äº‹ ï¬SELinux周り諸々 (2004~) •Lockless AVCã€JFFS2 XATTRãªã© ï¬PostgreSQL周り諸々 (2008~) •SE-PostgreSQLã€Security Barrier Viewã€Writable FDWãªã© ï¬PG-Strom (2012~) DB Tech Showcase 2014 Tokyo; PG-Strom - GPGPU acceleration on PostgreSQL Page. 2 4. GPU (Graphic Processor Unit) ã®ç‰¹
DB è¨è¨ˆæ™‚ã®ã‚µã‚¤ã‚ºè¦‹ç©ã‚Š[最新版] - Qiita
ã“ã‚“ã«ã¡ã¯ã€ã™ã£ã‹ã‚Šç§‹ã§ã™ãï¼@yone098 ã§ã™ã€‚ ã¿ãªã•ã‚“DBã®è¨è¨ˆã—ã¦ã¾ã™ã‹ï¼Ÿ DBè¨è¨ˆæ™‚ã®ã‚µã‚¤ã‚ºè¦‹ç©ã‚Š 以å‰ã¯ã¦ãªãƒ€ã‚¤ã‚¢ãƒªãƒ¼ã§æ›¸ã„ãŸè¨˜äº‹ã¯5å¹´å‰ã®ã‚‚ã®ã§ã‚ã‚Šã€ãƒªãƒ³ã‚¯ãŒåˆ‡ã‚Œã¦ã„ã‚‹ã‚‚ã®ãŒã‚ã‚‹ã®ã§æœ€æ–°ç‰ˆã¨ã—㦠MySQL, PostgreSQL, Oracle, SQLServer ã«ãŠã‘ã‚‹DBè¨è¨ˆæ™‚ã®ã‚µã‚¤ã‚ºè¦‹ç©ã‚Šã‚’ã¾ã¨ã‚ç›´ã—ã¾ã—ãŸã€‚ MySQL URL内ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³è¡¨è¨˜ã‚’変ãˆã‚‹ã¨ä»¥å‰ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®æƒ…å ±ã«ãªã‚Šã¾ã™ã€‚ MySQLã¯ã€ã‚ã¾ã‚Šæƒ…å ±ã«å¤‰åŒ–ã¯ç„¡ã‹ã£ãŸã®ã§ Excel ã§ãƒžã‚¯ãƒãªã©ã‚’作æˆã—ã¦è‡ªç¤¾ã§è‡ªå‹•ç®—出出æ¥ã‚‹ã‚ˆã†ã«ã™ã‚‹ã®ãŒè‰¯ã„ã¨æ€ã„ã¾ã™ã€‚ データタイプã”ã¨ã«å¿…è¦ãªè¦æ±‚ストレージãŒæ±ºã¾ã£ã¦ã„ã‚‹ã®ã§ãƒ¬ã‚³ãƒ¼ãƒ‰ã‚µã‚¤ã‚ºãŒæ±ºã¾ã‚Šã€ã‚ã¨ã¯è¦ä»¶æ¬¡ç¬¬ã§ä½•ãƒ¬ã‚³ãƒ¼ãƒ‰ã«ãªã‚‹ã‹ã‚’予測ã—ã¾ã™ã€‚ データタイプã”ã¨ã«å¿…è¦ãªè¨˜æ†¶å®¹é‡ テーブルã®æœ€å¤§ã‚µã‚¤ã‚ºé–¢é€£ http://dev.mysql.com/doc/re
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Datomic - Overview
Datomic Pro The fully transactional, cloud-ready, distributed database. Build flexible, distributed systems that can leverage the entire history of your critical data, not just the most current state. Build them on your existing infrastructure or jump straight to the cloud. Never Forget Critical insights come from knowing the full story of your data, not just the most recent state. Datomic stores
Apache Cassandra | Apache Cassandra Documentation
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.
RAID - Wikipedia
ã“ã®è¨˜äº‹ã®å†…容ã®ä¿¡é ¼æ€§ã«ã¤ã„ã¦æ¤œè¨¼ãŒæ±‚ã‚られã¦ã„ã¾ã™ã€‚ 確èªã®ãŸã‚ã®æ–‡çŒ®ã‚„æƒ…å ±æºã‚’ã”å˜ã˜ã®æ–¹ã¯ã”æ示ãã ã•ã„。出典を明記ã—ã€è¨˜äº‹ã®ä¿¡é ¼æ€§ã‚’高ã‚ã‚‹ãŸã‚ã«ã”å”力をãŠé¡˜ã„ã—ã¾ã™ã€‚è°è«–ã¯ãƒŽãƒ¼ãƒˆã‚’å‚ç…§ã—ã¦ãã ã•ã„。（2010å¹´4月） ã“ã®è¨˜äº‹ã«ã¯ç‹¬è‡ªç ”究ãŒå«ã¾ã‚Œã¦ã„ã‚‹ãŠãã‚ŒãŒã‚ã‚Šã¾ã™ã€‚ å•é¡Œç®‡æ‰€ã‚’検証ã—å‡ºå…¸ã‚’è¿½åŠ ã—ã¦ã€è¨˜äº‹ã®æ”¹å–„ã«ã”å”力ãã ã•ã„。è°è«–ã¯ãƒŽãƒ¼ãƒˆã‚’å‚ç…§ã—ã¦ãã ã•ã„。（2010å¹´4月） RAID（Redundant Arrays of Inexpensive Disksã€ã¾ãŸã¯ Redundant Arrays of Independent Disksã€ãƒ¬ã‚¤ãƒ‰ï¼‰[1]ã¯ã€è¤‡æ•°å°ã®ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ã‚’組ã¿åˆã‚ã›ã‚‹ã“ã¨ã§ä»®æƒ³çš„ãª1å°ã®ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ã¨ã—ã¦é‹ç”¨ã—冗長性をå‘上ã•ã›ã‚‹æŠ€è¡“[2]。ディスクアレイã®ä»£è¡¨çš„ãªå®Ÿè£…形態ã§ã€ä¸»ã«ä¿¡é ¼æ€§ãƒ»å¯ç”¨æ€§ã®å‘上を目的ã¨ã—ã¦ç”¨ã„られるもã®ã§ã‚る。ãƒãƒƒã‚¯ã‚¢ãƒƒãƒ—ã¨æ··
ã„ã¾ã•ã‚‰èžã‘ãªã„Hadoopã¨ãƒ†ã‚ストマイニング入門
ビッグデータ時代ã®æ•‘世主「Hadoopã€ã¨ã¯ 「Apache Hadoopã€ã¯ä»Šã€æœ€ã‚‚注目を集ã‚ã¦ã„る技術ã®1ã¤ã§ã™ã€‚Hadoopã¨ã¯ã€å¤§é‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’手軽ã«è¤‡æ•°ã®ãƒžã‚·ãƒ³ã«åˆ†æ•£ã—ã¦å‡¦ç†ã§ãるオープンソースã®ãƒ—ラットフォームã§ã™ã€‚ Hadoopを活用ã—ã¦ã„ã‚‹ä¼æ¥ã¯å¹´ã€…増ãˆç¶šã‘ã¦ã„ã¦ã€ä¸å¯æ¬ ãªæŠ€è¡“ã«ãªã‚Šã¤ã¤ã‚ã‚‹ã¨ã„ãˆã‚‹ã§ã—ょã†ã€‚ 本連載ã§ã¯ã€Hadoopã¨ã¯ä½•ã‹ã€HadoopãŒã©ã†æ´»ç”¨ã§ãã‚‹ã®ã‹ã¨ã„ã†ã“ã¨ã‚’ã€ã€Œãƒ†ã‚ストマイニングã€ã«ç„¦ç‚¹ã‚’当ã¦ã¦è§£èª¬ã—ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ é‡ã„処ç†ã‚’複数ã®ãƒžã‚·ãƒ³ã«åˆ†æ•£ã•ã›ã‚‹ 複数ã®ãƒžã‚·ãƒ³ã«å‡¦ç†ã‚’分散ã•ã›ã‚‹ã«ã¯ã€ãƒ—ãƒã‚»ã‚¹åŒå£«ã®é€šä¿¡ã€ç›£è¦–ã€éšœå®³æ™‚ã®å¯¾å¿œãªã©ã‚’考ãˆãªã‘ã‚Œã°ãªã‚‰ãšã€ãƒ—ãƒã‚°ãƒ©ãƒžã«ã¨ã£ã¦ãƒãƒ¼ãƒ‰ãƒ«ãŒé«˜ã„ã‚‚ã®ã§ã™ã€‚ã—ã‹ã—ã€Hadoopã¯ãã†ã„ã£ãŸé¢å€’ãã•ã„処ç†ã‚’一手ã«å¼•ãå—ã‘ã¦ãã‚Œã€ãƒ—ãƒã‚°ãƒ©ãƒžã¯ã€ã‚„ã‚ŠãŸã„処ç†ã ã‘ã«é›†ä¸ã§ãã¾ã™ã€‚ 例ãˆã°ã€Hadoopを使ã†ã¨ã€1
連載記事 「RDB開発者ã«ãŠãã‚‹NoSQLã®å¸¸è˜ã€
〠pidof 】コマンド――コマンドåã‹ã‚‰ãƒ—ãƒã‚»ã‚¹IDを探㙠（2017/7/27） 本連載ã¯ã€Linuxã®ã‚³ãƒžãƒ³ãƒ‰ã«ã¤ã„ã¦ã€åŸºæœ¬æ›¸å¼ã‹ã‚‰ã‚ªãƒ—ションã€å…·ä½“çš„ãªå®Ÿè¡Œä¾‹ã¾ã§ã‚’紹介ã—ã¦ã„ãã¾ã™ã€‚今回ã¯ã€ã‚³ãƒžãƒ³ãƒ‰åã‹ã‚‰ãƒ—ãƒã‚»ã‚¹IDを探ã™ã€Œpidofã€ã‚³ãƒžãƒ³ãƒ‰ã§ã™ã€‚ Linuxã®ã€Œã‚¸ãƒ§ãƒ–コントãƒãƒ¼ãƒ«ã€ã‚’マスターã—よㆠ（2017/7/21） 今回ã¯ã€ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ç’°å¢ƒã§ã®ã‚¸ãƒ§ãƒ–コントãƒãƒ¼ãƒ«ã‚’試ã—ã¦ã¿ã¾ã—ょã†ã€‚X環境をæŒãŸãªã„サーãƒç®¡ç†ã‚„リモート接続時ã«å½¹ç«‹ã¤æ“作ã§ã™ 〠pidstat 】コマンド――プãƒã‚»ã‚¹ã®ãƒªã‚½ãƒ¼ã‚¹ä½¿ç”¨é‡ã‚’表示ã™ã‚‹ （2017/7/21） 本連載ã¯ã€Linuxã®ã‚³ãƒžãƒ³ãƒ‰ã«ã¤ã„ã¦ã€åŸºæœ¬æ›¸å¼ã‹ã‚‰ã‚ªãƒ—ションã€å…·ä½“çš„ãªå®Ÿè¡Œä¾‹ã¾ã§ã‚’紹介ã—ã¦ã„ãã¾ã™ã€‚今回ã¯ã€ãƒ—ãƒã‚»ã‚¹ã”ã¨ã®CPUã®ä½¿ç”¨çŽ‡ã‚„I/Oデãƒã‚¤ã‚¹ã®ä½¿ç”¨çŠ¶æ³ã‚’表示ã™ã‚‹ã€Œpidstatã€ã‚³ãƒžãƒ³ãƒ‰ã§ã™ã€‚ 〠iostat 】コマンド――I
NoSQL - Wikipedia
"Structured storage" redirects here. For the Microsoft technology, see COM Structured Storage. This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. (December 2023) (Learn how and when to remove this message) NoSQL (originally referring to "non-SQL" or "non-relational")[1] is an app
Entity/Relationship and Relational Models
Table of Contents Entity/Relationship and Relational Models Purpose of the ER Model and Basic Concepts Entity Relationship Attribute Keys ER Diagrams Binary Relationships and Their Functionality Binary Relationships and ... (Cont.) Binary Relationships and ... (Cont.) Binary Relationships and ... (Cont.) Binary Relationships Involving One Entity Set Non-Binary Relationships Non-Binary Relationship
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GitHub - localForage/localForage: 💾 Offline storage, improved. Wraps IndexedDB, WebSQL, or localStorage using a simple but powerful API.
neo4j open source nosql graph database
GitHub - davedevelopment/phpmig: Simple migrations system for php
MongoDB
DB: Lecture Notes
Entity Relationship Diagrams
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