The business value of data quality initiatives will generally depend on the ability of the corporation to maintain an accurate metadata repository.doi:10.1016/B978-155860891-7/50005-6Jack E. OlsonElsevier Inc.Olson, J. E. (2003). Sources of inaccurate data. In J. E. Olson (Ed.), Data ...
Tools for monitoring different components in a production environment have been available for several years now, and although they can be adapted to handle server clusters, the overhead involved in juggling multiple tools and sets of data grows exponentially with the size and complexity of the ...
To Microsoft Jet, a "database" has different meanings depending on the source of the data. While a Microsoft Jet database is physically represented as an .mdb file, the database for other data sources is just a logical construction. For example, a dBASE or Microsoft FoxPro database is not...
Thesources.hostssetting in theWaveset.propertiesfile controls which hosts in a multi instance environment are used for executing Active Sync requests. This setting provides a list of hosts that source adapters can run on. Setting this tolocalhostornullwill allow source adapters to execute on any h...
For optimum performance of database-intensive applications, tune the JDBC Connection Pools managed by the Application Server. These connection pools maintain numerous live database connections that can be reused to reduce the overhead of opening and closing database connections. This section describes ...
Blocking and hotspots are common sources of contention. Blocking is caused by long-running tasks such as expensive I/O operations. Hotspots result from concentrated access to certain data that everyone needs. Avoid blocking while accessing resources because resource contention leads to requests being ...
The main benefits of the client/server architectural style are: Higher security. All data is stored on the server, which generally offers a greater control of security than client machines. Centralized data access. Because data is stored only on the server, access and updates to the data are ...
collectedandwhenitisanalyzed.human/hardware/softwareproblems Noisydatacomesfromtheprocessofdata collectionentrytransmission Inconsistentdatacomesfrom DifferentdatasourcesFunctionaldependencyviolation 10/27/2019 DataMining:ConceptsandTechniques ...
UniversityofIllinoisatUrbana-Champaign www.cs.uiuc.edu/~hanj April9,2019DataMining:ConceptsandTechniques1 Chapter3:DataPreprocessing Whypreprocessthedata?Datacleaning Dataintegrationandtransformation Datareduction Discretizationandconcepthierarchygeneration Summary April9,2019 DataMining:...
What is the difference between primary sources and second sources? a: Primary sources relate to publicly available data, like historical documents (e.g., a transcript of oral history, interview data), raw data from an experiment, or demographic records. b: Second sources relate to publicly av...