Query Optimization for Virtual Attributes in Object Deputy Database
LIU Dongming
WANG Liang
WANG Liwei
PENG Zhiyong
Abstract：Two methods ,expression promotion and virtual attributes merger are proposed .Expression promotion will rewrite the query on virtual attributes to their inherited attributes .Virtual attributes merger will access all attributes value belonging to the same source object for virtual attribute computation .The experimental results demonstrate that the query with our methods can achieve a great improvement .
Keywords：object deputy databasedeputy objectswitching expressionexpression promotionvirtual attributes merger
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1792-1797,1807 )