BigQueryã¯ã«ã©ã åãã¼ã¿ã¹ãã¢ã®ä¸ç¨®ã§ããã©ãã¤ãã¯ã©ã¹ã®å¤§è¦æ¨¡ãã¼ã¿ã«å¯¾ãã¦å¤§éã®ä¸¦åå¦çãè¡ããã¨ã§é«éã«çµæãå¾ããã¨ãå¯è½ãã°ã¼ã°ã« ä½è¤ä¸æ²æ°ã®çºè¨ã«ããã¨ã OLAP/DWH/Data Miningã§è¡ããããããªread onlyã®ad hocã¯ã¨ãªããããã¦é«éï¼æ°ç§ãæ°åç§ï¼ã«å®è¡ãã¾ãã ã¨ã®ãã¨ã SQLã«ããåãåãããå¯è½ ãã®é«éæ§ã«å ããBigQueryã§ã¯SQLãåãåããè¨èªã«ä½¿ããã¨ããç¹ã«ã大ããªç¹å¾´ãããã¾ããæ°ç§ç¨åº¦ã®ã¬ã¹ãã³ã¹ã¨SQLæã«ããè¨è¿°ã¯ã大è¦æ¨¡ãã¼ã¿ã«å¯¾ããã¢ãããã¯ãªå¦çãè¡ãã®ã«é©ãããµã¼ãã¹ã ã¨ãããã§ãããã BigQueryã®SQLã®æ§æã¯ãQuery Referenceãã§è§£èª¬ããã¦ãã¾ãããSELECTæã«FROMãWHEREãJOINãHAVINGãGROUP BYãORDER BYãLIMITãªã©ã使ãããã
NoSQLãã¼ã¿ã¢ããªã³ã°ææ³.markdown #NoSQLãã¼ã¿ã¢ããªã³ã°ææ³ åæï¼NoSQL Data Modeling Techniques « Highly Scalable Blog I translated this article for study. contact matope[dot]ono[gmail] if any problem. NoSQLãã¼ã¿ãã¼ã¹ã¯ã¹ã±ã¼ã©ããªãã£ãããã©ã¼ãã³ã¹ãä¸è²«æ§ã¨ãã£ãæ§ã ãªéæ©è½è¦ä»¶ããæ¯è¼ããããNoSQLã®ãã®å´é¢ã¯å®è·µã¨çè«ã®ä¸¡é¢ããããç 究ããã¦ããããã種ã®éæ©è½ç¹æ§ã¯NoSQLãå©ç¨ãã主ãªåæ©ã§ãããNoSQLã·ã¹ãã ã«ããé©ç¨ãããCAPå®çãããã§ããããã«åæ£ã·ã¹ãã ã®åºæ¬çååã ããã ãä¸æ¹ã§ãNoSQLãã¼ã¿ã¢ããªã³ã°ã¯ãã¾ãç 究ããã¦ãããããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã«è¦ããããããªã·ã¹ãããã£ãã¯
ããã°ã©ãã³ã°è¨èªClojureã®ä½è Rich Hickeyæ°çããClojure Hackerã®ãã¼ã ãDatomic(ãã¼ãããã¯ã¨çºé³ããããã)ã¨ãããã¼ã¿ãã¼ã¹ããªãªã¼ã¹ãã¾ããããããä½ããã¨ã¦ã¤ããªãã§ãã10å¹´å ãè¡ã£ã¦ãæè¡ãããªãã§ããããã ã¾ã æ¬çªãµã¼ãã¹ã¯å§ã¾ã£ã¦ãã¾ãããéçºç°å¢ç¨ã®ã©ã¤ãã©ãªãé å¸ããã¦ãã¾ãã Datomicã¯æ¬æ°ãªã¢ã¼ããã¯ãã£ãªã®ã§ä¸è¨ã§èª¬æããã®ã¯ã¨ã¦ãé£ããã§ãã ç§ãç解ã§ãããã¨ãç°¡åã«èª¬æãã¾ãã 2014/1/20è¿½è¨ ã©ã¤ã»ã³ã¹ã¢ãã«ããµãã¼ãã¹ãã¬ã¼ã¸ããµã¼ãã¹ã¨ãã¦ã§ã¯ãªãç¬ç«ãã¦ä½¿ç¨ããå½¢ã«ãªããªã©è¨äºä½ææã®å 容ããè²ã å¤æ´ãåã£ãé¨åãæ´æ°ãã¾ããã å¤æ´ä¸å¯ãªAppend-onlyãã¼ã¿ãã¼ã¹ å¾æ¥ã®ãã¼ã¿ãã¼ã¹ã§ãããã¬ã³ã¼ããå¤æ´ããã¨ããã®ã¯ãã®ã¬ã³ã¼ãã«å¯¾å¿ããå ´æããããããã®ãã¼ã¿ãæ¸ãæããã¨ããã
ããã¹ããªã©éæ§é åãã¼ã¿ã®ãã¼ã¿ãã¼ã¹æ©è½ã¨ãµã¼ãã¨ã³ã¸ã³æ©è½ãå ¼ãåããåæ£ãªã¢ã«ã¿ã¤ã ãã¼ã¿ãã¼ã¹ãSenseiDBããããªã¼ãã³ã½ã¼ã¹ã¨ãã¦å ¬éããã¦ãã¾ãã SenseiDBã¨ã¯å çDBã®æå³ãããããSensei (å ç) means teacher or professor in Japaneseãã¨èª¬æãããããã´ã«ãã師ãã®æåã使ããã¦ãã¾ãããªãå çãªã®ãããã®æå³ã«ã¤ãã¦ä»¥ä¸ã®ããã«èª¬æãããã®ã§ããâ¦â¦ This name indicates that the system can be used in place of Oracle database in many applications. ãã®ååã示ãã¦ããã®ã¯ããã®ã·ã¹ãã ãå¤ãã®ã¢ããªã±ã¼ã·ã§ã³ã«ããã¦Oracleãã¼ã¿ãã¼ã¹ã§ä½¿ããã¦ããã¨ããã§å©ç¨å¯è½ã ã¨ãããã¨ã§ãã TeacherãProfe
ãã¼ã¿ãã¼ã¹è¨è¨ã®è©±ããã¦ãã¦ããé£çªã®ä¸»ãã¼ã¯æ¥åä¸æå³ã®ãªããã¼ã¿ã ããããã¼ãã«ã«æãããã®ã¯ã ãã ãè¤å主ãã¼ã«ããã¹ããã¨ããæè¦ãèãæ©ä¼ãããã¾ããã èé«åå°ã§ããªããã¼ãã¨æã£ããã®ã®ãçç±ãä¸æã説æã§ããªãã£ãã®ã§ãæ¹ãã¦èãã¦ã¿ã¾ããã ãã®çµæã次ã®ãããªçµè«ã«è³ãã¾ããã åä¸ã®é£çªã«ã©ã ã«ãã主ãã¼ã¨ãè¤åã«ã©ã ã«ãã主ãã¼ã¨ã§è¿·ã£ãã å®è£ ãã·ã³ãã«ã«ããæ¥åå¤æ´ã®å½±é¿ç¯å²ãå°ããããããã«ãè¤å主ãã¼ãé¿ãã ã¨ããããã§ã調ã¹ããã¨ãèãããã¨ãã¡ã¢ãã¦ããã¾ãã# ééã£ã¦ããé¨åãããã°ãæãã¦ããã ããã¨å¬ããã§ãã ï¼2011/07/25 追è¨ï¼è¤å主ãã¼ã¨ãµãã²ã¼ããã¼ã«ã¤ãã¦ã¯ãè¦ä»¶ãã·ã¹ãã ã«ä¾åãã¦å¤æ§ãªå¤æãããããã¨æãã¾ããã«ããããããããé¿ããã¹ããã¨ããã¿ã¤ãã«ã«ããã®ã¯æ¥µç«¯ã§ãããç³ã訳ããã¾ããããææä¸ãã£ãçããããã
ãã¼ã¿ãã¼ã¹ã®ä¸çã§ãã¾æ³¨ç®ããã¦ããã®ãNoSQLãç¹ã«ãã¼ããªã¥ã¼åãã¼ã¿ã¹ãã¢ã¯ãã°ã¼ã°ã«ã®BigTableãFacebookãTwitterãå é¨ã§å©ç¨ãã¦ããCassandraãAmazonã¯ã©ã¦ããæä¾ãã¦ããSimpleDBãªã©ããã§ã«å®éã«ä½¿ããå§ãã¦ãã¾ãã ã§ã¯ãã®NoSQLããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã®ä»£ããã«ä½¿ã£ã¦ã·ã¹ãã ãæ§ç¯ããã¨ã©ããªãã®ãï¼ èº«ããã£ã¦ä½é¨ãããã¨ãè¨ããShinya Kawanakaæ°ã«ãããã¬ã¼ã³ãã¼ã·ã§ã³ãééã£ãæ¹åã«Cassandraã使ã£ã¦ã¿ãããå ¬éããã¦ãã¾ãã NoSQLãç¨ããã·ã¹ãã æ§ç¯ã¯ããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã«ããæ§ç¯ã©ãéãã®ãï¼ ã¨ã¦ãåãããããã¾ã¨ãããã¦ãã¾ãããæ¬äººã®æ¿è«¾ãããã ããã®ã§ããã®å 容ãç´¹ä»ãã¾ãããã NoSQLã使ã£ãã¨ãã«èµ·ããæãããäºä¾ ãã¬ã¼ã³ãã¼ã·ã§ã³ã®ãã¼ãã¯ãNoSQLã
NotORM is a PHP library for simple working with data in the database. The most interesting feature is a very easy work with table relationships. The overall performance is also very important and NotORM can actually run faster than a native driver. NotORM for databases is like SimpleXML for XML documents. Download, Source codes on GitHub, Forum, Zend-NotORM Requirements: PHP 5.1+ with any database
ãã¼ãã«ã®JOINãè¦æã§ãããããã®ä¾ãæãã¤ãã¦ããã¯ããã£ãããã£ããç解ã§ããããã«ãªãã¾ããããããé ããé¢ãã¾ããâ¦â¦ã â» INNERãOUTERã¯é£¾ããçç¥ã§ããã INNER JOIN â JOIN LEFT OUTER JOIN â LEFT JOIN RIGHT OUTER JOIN â RIGHT JOIN â» ON ...=... ãã¾ã¨ã㦠USING(å±æ§) ã¨æ¸ããã â» ä½ã§çµåãããè¨ãã¾ã§ããªãæã¯ãNATURALãæå®ããã¨åæã«JOINãã¦ããããNATURALã«JOINãã¦â¦â¦ã â» WHEREã¯çµåããçµæã«ä½ç¨ããã â» ç¾å®ã«ã¯ä¸å³ã®ããã«1対1ã§çµåãã¾ããã â» ãã¾ããCROSS JOINã ãããªã®ä½¿ãã¾ããã ãã¯ãç¨ç»åã
1.4ç³»ã§æ°ãã追å ããã主ãªæ©è½ãã¦ã¯ ãã¤ããªãããã³ã«ã®å°å ¥ ãã«ãã¹ã¬ããã®æ¨æºå çµ±è¨ã®å¼·å ãªã©ãä¸ãããã¾ãããã®1.4ç³»ã®æ©è½ã®è©³ç´°ã«ã¤ãã¦ã¯ååå¾¹æ°ã®é£è¼ãmemcached 1.4ã®å°æ¥ããåèã¨ãªãã¾ããããã§ã¯ãã¼ã¸ã§ã³1.2.5ã¨ææ°ã®1.4.5ã®èµ·åãªãã·ã§ã³ãæ¯è¼ããªãããæ°ãã追å ãããæ©è½ãå®éã®éç¨ã§ç¨ããããèµ·åãªãã·ã§ã³ã«ã¤ãã¦èª¬æãã¾ãã 1.2ç³»ã¨1.4ç³»ã®èµ·åãªãã·ã§ã³ã®éã ã¾ããmemcachedã®èµ·åãªãã·ã§ã³ã®ä¸è¦§ï¼ãã«ãï¼ã確èªãã¾ããããmemcachedã®ãã«ããåºåããã«ã¯ããâ -hããªãã·ã§ã³ã使ãã¾ãã $ memcached -h memcached 1.x.x -p <num> TCP port number to listen on (default: 11211) -U <num> UDP port number t
å½å å¤ã®ãµã¤ããç´¹ä»ããã®ã£ã©ãªã¼ãµã¤ããå½å¥ãæ¥çã»åéå¥ãè²å¥çã詳細ãªã«ãã´ãªã¼åããç¹å¾´ã§ãã
WEBãã¶ã¤ãã¼ã®ããã®WEBãµã¤ãã®ãã¼ã¿ãã¼ã¹ã»ãªã³ã¯éããWEBãµã¤ããä½æããéã®ãã¶ã¤ã³ã®é è²ã»è¦æ¬ã»åèããã客æ§ã»ã¯ã©ã¤ã¢ã³ãã«ã¤ã¡ã¼ã¸ãä¼ããããã®ãµã³ãã«ããå¶ä½ä¼ç¤¾ã¸ã®ãµã¤ãã¤ã¡ã¼ã¸ãä¼ããããã®ãææ¡ããªã©ãµã³ãã«ã»é è²ã»è¦æ¬ã»åèã»ãææ¡ã«ãå©ç¨ãã ãã!!
ãã¤ã¦ã¯é常ã«é«ä¾¡ãªãã®ã§ãæ軽ã«å°å ¥ã§ããªãã¨ããå°è±¡ã®ãã£ããã¼ã¿ãã¼ã¹ã§ãããç¾å¨ã§ã¯ãPostgreSQLãMySQLãFirebirdãªã©ã¨ãã£ããªã¼ãã³ã½ã¼ã¹ã®ãã¼ã¿ãã¼ã¹ãåç¨ã®ãã®ã«å¼ããåããªãæ©è½ãæ§è½ãåããããã«ãªããããã»ã©è¦æ¨¡ã®å¤§ãããªãWebã¢ããªã±ã¼ã·ã§ã³ã§ãã£ã¦ãããããã¾ãã®ããã«ãã¼ã¿ãã¼ã¹ã使ç¨ãããããã«ãªãã¾ããã æ¬ç¹éã§ã¯ãWebã¢ããªã±ã¼ã·ã§ã³ãåãã¦éçºããã¨ããæ¹ã«åãã¦ããã¼ã¿ãã¼ã¹è¨è¨ã®åºæ¬ã«ã¤ãã¦èª¬æãã¦ããã¾ãããªããä¸è¨ã«ãã¼ã¿ãã¼ã¹ã¨ãã£ã¦ããããããªãã®ãããã¾ããããããããã¼ãã«ã«ãã£ã¦ãã¼ã¿ã管çãããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã対象ã¨ãã¾ãã ä»åã¯ããã¼ã¿ãã¼ã¹è¨è¨ã®å ¨ä½çãªæµãã«ã¤ãã¦èª¬æãã¾ãã ãã¼ã¿ãã¼ã¹è¨è¨ã¨ã¯ããã¼ã¿ãã¼ã¹ã«ãã£ã¦ãã¼ã¿ã管çã§ããããã«ãç¾å®ã®ä¸çãæ½è±¡åãã¦ãã¼ã¿ã¢ãã«ãä½æãã¦ãã
é¦è¤ ä¸å¹¸ Last-updated: January 5, 2010 注: ãã®ãã¼ã¸ã®æç« ã¯ Software Design èª 2010å¹´ 2æå·ã«æ²è¼ããã以ä¸ã®è¨äºã®å å稿ã§ãã Software Design èªç·¨éé¨ã®äºæ¿ã®å ã«ãæ¬ã¦ã§ããã¼ã¸ã«æ²è¼ãã¦ããã¾ãã é¦è¤ä¸å¹¸: "key-valueã¹ãã¢ã®åºç¤ç¥è", Software Design 2010å¹´ 2æå·, p.14-21, (æ ª)æè¡è©è«ç¤¾, 2010å¹´ 1æ 18æ¥ ã¯ã©ã¦ããç¹ã«PaaSåãã®ã½ããã¦ã§ã¢éçºãç¾å®ã®ãã®ã¨ãªãã ããã§ã¯ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã¨ã¯éã£ããã¼ã¿ãã¼ã¹ã å¢ããå¢ãã¦ãã¾ãã ãã®ä»£è¡¨ã§ããkey-valueã¹ãã¢ã解説ãã¾ãã ããã key-valueã¹ãã¢ã¨ã¯ ãªãkey-valueã¹ãã¢ã key-valueã¹ãã¢ã®ä½¿ãã©ãã key-valueã¹ãã¢ã¨NoSQLã®
InnoDBã¯MyISAMã¨æ¯è¼ãã¦å®å ¨(OSã¯ã©ãã·ã¥ãé»æºæãçºçãã¦ããã¼ãã«ãå£ããªã)åãæ¸ãè¾¼ã¿ãé ãããã¼ã¿ãã¼ã¹å±ããããããã¨ãããã¯å½ç¶ã®ãã¨ã§MyISAMããããããã ãã¨ãããã¨ã«ãªããã ããããããªããã¯ã¢ããæ©è½ã®ã¤ããRAIDã«ã¼ãã使ããã ãã¨ãã話ã«ãªããã§ããMyISAMã使ã£ã¦ããã¦ã§ãå±ããã®ç¾å ´ã§ã¯ãå ´åã«ãã£ã¦å¤å°ãã¼ã¿ãæ¶ãã¦ããã¾ããªããããå®ããã¼ãã¦ã§ã¢ã§å¤§éã®ã¢ã¯ã»ã¹ãæããã... ã£ã¦ä¹é¢ãããããããªãããªã¼ã¨æã£ã¦ãã ãã®ãããªå ´åã«ã¯ãmy.cnf ã® innodb_flush_log_at_trx_commit ãã©ã¡ã¼ã¿ã調æ´ãããã¨ã§ãMyISAMã«æ¯è©ããæ¸ãè¾¼ã¿é度ãå¾ããã¨ãã§ãã(ãã®ããããã¯ã©ãã·ã¥ãé»æºæã®å ´åã¯ãè¨å®ã«ãã£ã¦ç´è¿ï¼ç§ä»¥å ã®å¤æ´ã失ããã)ã ä»ã®ãã©ã¡ã¼ã¿ãå«ãã¦æ¸ãã¦ããã¨ããã¼ã¿ãã¼
ãã¤ããMySQLã使ãã¨ãã¯ããããã¹ããã¨ãã観ç¹ããè¨äºãæ¸ãã¦ããããä»æ¥ã¯éã«ç¯ãã¦ã¯ãããªãéã¡ããªã¹ãã¢ãããããã¨æãã 1. å ¨ã¦ã®ã«ã©ã ã«ã¤ã³ããã¯ã¹ãã¤ãããã¼ã¿ãã¼ã¹åå¿è ããã£ã¨ããã£ã¦ãã¾ããã¡ãªééãã¯ã³ã¬ã§ã¯ãªãã ããããã¤ã³ããã¯ã¹ã¯ãããæ¤ç´¢ãã¨ã¦ãéããªããããããããããã¨å¼ãæ¿ãã«ã¤ã³ããã¯ã¹ã¯æ´æ°ããã¨ãã«ã³ã¹ããããããããã®åå¤ãã®ãã£ã¹ã¯ã¹ãã¼ã¹ãæ¶è²»ãããç¹ã«æ´æ°ã«ãããã³ã¹ãã¯æã«ç大ã§ã該å½ããã¤ã³ããã¯ã¹ã®ãã¼ã¸ããã£ãã·ã¥ä¸ã«ãªãå ´åã¯ãã£ã¹ã¯ãããã£ãããã®ãã¼ã¸ãèªã¿è¾¼ã¾ãªããã°ãããªãããã£ã¹ã¯ã¢ã¯ã»ã¹ã¯åä½ã«ã¨ã¦ãæéããããã®ã§ãã¤ã³ããã¯ã¹ãå¤æ°ãä¾ãã°å ¨ã¦ã®ã«ã©ã ã«ä»ãã¦ãããããã¨ãããï¼åºã¾ã£ããï¼ãã¨ãããããªç¶æ ã«ãªã£ã¦ãã¾ããã¨ãããã ãããã¤ã³ããã¯ã¹ã¯å¿ è¦ãªã«ã©ã ã«ã ãã¤ããããã«ãã¼ãã«ãè¨è¨ãããã
ã¡ã³ããã³ã¹
ãç¥ãã
é害
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}