列式数据库存储原理

Copyright©2010SequelCorporation黄志洪2011.3.25列式数据库存储原理Copyright©2010SequelCorporation黄志洪2011.3.25传统数据库的行式存储„明摩孟既圭明摩映价冈„明摩映价碍堂柏而找卖低＞坚/鹿„坚冈聋桃＞坚夷、明摩医Copyright©2010SequelCorporation黄志洪2011.3.25行式存储的问题„趣梁中刘忆黎趣全星访„访与纳零０俯旗明摩台茎寿著访避篷„访明摩速夜曳台茎寿著访陵Copyright©2010SequelCorporation黄志洪2011.3.25行式存储的访问路径„八词拇擦„访棒贾贴震Copyright©2010SequelCorporation黄志洪2011.3.25行标识访问：B树索引Copyright©2010SequelCorporation黄志洪2011.3.25B树索引原理：结点Copyright©2010SequelCorporation黄志洪2011.3.25B树索引原理：树形„别看B棚都访械赞’’accesspath„B棚支全’’切误聋玉„B棚判领’’吉幸聋玉Copyright©2010SequelCorporation黄志洪2011.3.25B树索引的弱点„粟露令任０初开曳露令任０胁拿令任„闲夏倾夜曳彻哎旧症Copyright©2010SequelCorporation黄志洪2011.3.25位图索引„去盒Copyright©2010SequelCorporation黄志洪2011.3.25位向量压缩：分段长度编码„i０j碍扩之友厌脸细涂Copyright©2010SequelCorporation黄志洪2011.3.25位向量维护„判领＞低吗闸秃底低臂旗0０访司-访棒贾词抬下判领棒货„支全＞叫驶俯旗迪key倾构兴碍低吗闸０去团望厌脸细涂意矛低吗闸板吐配育碍0０圭访司-访棒贾闯货彝晚访„俯旗＞叫驶俯旗构兴碍2访Copyright©2010SequelCorporation黄志洪2011.3.25列式vs行式行式列式明摩专缝弗切筒明摩专缝弗乙何明摩凡乏与厌脸明摩厌脸方你梁刘忆黎趣击星访茎私撤趣受梁刘明摩Copyright©2010SequelCorporation黄志洪2011.3.25列式数据库基本存储：FP索引Copyright©2010SequelCorporation黄志洪2011.3.25FP索引：细节„FP1０FP2０FP3０flatFP„孟像松摘倾循如备＞厌脸、纳宾„慎椎钱邦访司宛低赠访明摩碍秃底低臂Copyright©2010SequelCorporation黄志洪2011.3.25LF索引：改进的位图索引„暂黎访司’’访棒贾寻底„叫鬼吗住块棒倾碍手冷０暂黎例看B棚造努歌缝兴难倾„低吗闸厌脸纺矛＞0技1卡泄侍20%技80%０厌脸０吧刚与厌脸„低圆缝弗咖械拜词台仪停找名乙中聋桃Copyright©2010SequelCorporation黄志洪2011.3.25HG索引：改进的B树索引Copyright©2010SequelCorporation黄志洪2011.3.25HG索引：G-Array„孟像访司０纳宾考懂孟像０64K鹿台仪孟像4K中访司„妙桑访司孟牛乙中page０萨助透摘主低圆彩弓孟像„妙桑开素圭举难技唱乙罪栈刘下０刚与孟圭G-ArrayCopyright©2010SequelCorporation黄志洪2011.3.25HG索引：改进与优点„聋吉B棚专低圆碍伙玉„太眉釜吉Groupby、selectdistinct纳节吉方你„聋桃台仪项务圭械拜词下０墨务B棚咖提吗G-Array碍提队Copyright©2010SequelCorporation黄志洪2011.3.25HNG索引：bitwiseindex„明摩仪低普弓孟像０插低垃私刑瓶„秃录乙镇切刘牛进簇矩树价０台仪厌脸Copyright©2010SequelCorporation黄志洪2011.3.25Bitwise：计算„厌脸凑尔IO０台幸访豪细„釜吉豪细戏咖、年坎倾纳洁戏明摩０与釜吉切而节吉Copyright©2010SequelCorporationFAQ曳露21