Research on Multidimensional Data Model in Data Warehouse 多维数据模型数据仓库联机分析处理数据结构聚集函数OLAP操作序列支撑结构摘要:Guangjie LI国际技术管理
Gosain A, Mann S (2013) „‟Empirical validation of metrics for object oriented multidimensional model for data warehouse‟‟, Springer Int J Syst Assur Eng Manag.Gosain A, Mann S. Empirical validation of metrics for object oriented multidimensional model for data warehouse. International ...
Note:MDW dimensions use asurrogate key,a unique key generated from production keys by the ETL process. The surrogate key is not derived from any data in the EPM database and acts as the primary key in a MDW dimension. See the next topic for more information on surrogate keys in the MDW...
Note:The column definitions must match those defined on theOutputtab in the DRS lookup stage. The hash file name must match the name specified in theInputsandOutputstabs. The hash file will provide erroneous values if the column definitions and hash file names are ...
MOLAP er nemmere for brugeren, derfor er det en passende model til uerfarne brugere. MOLAP-terninger er bygget til hurtig datahentning og er optimale til udskærings- og terningsoperationer. Alle beregninger er forudgenereret, når kuben oprettes. ...
model Enterprise model Client model Figure 1: The role played by the Data Warehouse Concep- tual Data Model with respect to the DWQ architecture. sional information within a conceptual model in the data warehouse global information base. As stated above, the ...
网络资料仓储的资料模式 网络释义 1. 资料仓储的资料模式 从商业智慧到资料探勘-8943f57e_ppt2txt ... 资料仓储的语意模式 Star schema资料仓储的资料模式Multidimensional Data Mod… www.ppt2txt.com|基于 1 个网页
Data warehouse requirementsMDAMultidimensional schemaHistorizationMetadataUML profileNowadays, the growing importance of modelling in software engineering is without a doubt reinforced by the blossoming of model-driven architecture (MDA). In this trend, MDA could be considered the most convenient approach ...
Benchmarking data warehouses is a means to evaluate the performance of systems and the impacts of different technical choices. Developed on relational mode... K Dehdouh,O Boussaid,F Bentayeb - International Conference on Model & Data Engineering 被引量: 23发表: 2014年 SYSTEMS AND METHODS FOR...
bra) and of the various encodings can be found in [Franconi and Kamble, 2003]; in this paper we just give a brief introduction to the basic principles of the data model. GMD is completely defined using a logic-based approach. We start introduc- ing a data warehouse schema, which is...