Keywords: Data warehouse, data mining, Multidimensional OLAP, virtual warehouse, Concept Hierarchies, Bitmap Indexing meta data, multiple mining functions.E. RajakumarR. RajaChaudhuri et Dayal, 1997] CHAUDHURI, S. et DAYAL, U. (1997). An overview of data wa- rehou...
High performance for both systems DBMS— tuned for OLTP Warehouse—tuned for OLAP Different functions and different data: missing data: Decision support requires historical data which operational DBs do not typically maintain data consolidation: DS requires consolidation (aggregation, summarization) of ...
Maintenance of Data Cubes and Summary Tables in a Warehouse Data warehouses contain large amounts of information, often collected from a variety of independent sources. Decision-support functions in a warehouse, suc... IS Mumick,D Quass,BS Mumick - 《Acm Sigmod Record》 被引量: 636发表: ...
an OLAP server is typically the middle, analytical tier of a data warehousing solution. Common uses of OLAP include data mining and other business intelligence applications, complex analytical calculations, and predictive scenarios, as well as business reporting functions like financial analysis, budgeting...
With our years of research into data mining, an OLAP -based data mining system, DBMiner, has been developed, where OLAP mining is not only for data characterization but also for other data mining functions, including association, classification, prediction, clustering, and sequencing. Such an ...
[+]Functions/ [+]IO/ [+]Interpreters/ [+]Parsers/ [+]Processors/ [+]QueryPipeline/ [+]Server/ [+]Storages/ [+]TableFunctions/ OLAP 引子 Key Properties of OLAP Scenario The vast majority of requests are for read access. Data is updated in fairly large batches (> 1000 rows), not by...
The SQL aggregate functions and the GROUP BY operator produce zero-dimensional or one-dimensional aggregates. Applications need the N-dimensional generalization of these operators. This paper defines that operator, called the data cube or simply cube. The cube operator generalizes the histogram, cross...
Many applications, e.g., OLAP and data warehousing, process a table or tables in a database ... L Gong,M Olivas,C Posluszny,... 被引量: 13发表: 2005年 Administration & Services Db2 Olap Server Using Advanced FunctionsAdministrative Services Flexible Delivery Team (1997) Administration ...
Supportinformationprocessingbyprovidingasolidplatformofconsolidated,historicaldataforanalysis. “Adatawarehouseisasubject-oriented,integrated,time-variant,andnonvolatilecollectionofdatainsupportofmanagement’sdecision-makingprocess.”—W.H.Inmon Datawarehousing: ...
loading it into the CDW. However, OLAP tools encounter difficulties when dealing with encrypted data due to the inherent nature of OLAP queries, which require access to readable multidimensional data based on operations such as roll-up, drill-down, slice, dice, etc., as specified in the ...