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CostBased.Oracle.Fundamentals

上传者: 2019-07-13 11:49:00上传 PDF文件 10.48MB 热度 27次
ThetypicalcostofusingaB-treeindexcomprisesthreecomponents—thedepthoftheindex,basedontheblevel;thenumberofindexleafblocksthatwillbevisited,basedonleaf_blocks;andthenumberofvisitstotableblocks,basedontheclustering_factor.Theclustering_factorofanindexisaprimaryindicatorofhowdesirab
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码姐姐匿名网友 2019-07-13 11:49:00

ORACLE必读的经典国外书籍,资源很好,字很清楚!