Conditional functional dependencies for capturing data inconsistencies
نویسندگان
چکیده
منابع مشابه
Discovering Conditional Functional Dependencies to Detect Data Inconsistencies
Poor quality data is a growing and costly problem that affects many enterprises across all aspects of their business ranging from operational efficiency to revenue protection. In this paper, we present an approach that efficiently and robustly discovers conditional functional dependencies for detecting inconsistencies in data and hence improves data quality. We evaluate our approach empirically...
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XML data inconsistency has become a serious problem since XML was widely adopted as a standard for data representation on the web. XML-based standards such as OASIS, xCBL and xBRL have been used to report and exchange business and financial information. Such standards focus on technical rather than semantic aspects. XML Functional Dependencies (XFDs) have been introduced to improve XML semantic...
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This paper applies the data mining techniques in the area of data cleaning as effective in discovering Constant Conditional Functional Dependencies(CCFDs) from relational databases . These CCFDs are used as business rules for context dependent data validations. Conditional Functional Dependencies(CFDs) are an extension of Functional dependencies(FDs) which captures the consistency of data by su...
متن کاملApproximation Measures for Conditional Functional Dependencies Using Stripped Conditional Partitions
Received Apr 11, 2017 Revised May 5, 2017 Accepted May 24, 2017 Conditional functional dependencies (CFDs) have been used to improve the quality of data, including detecting and repairing data inconsistencies. Approximation measures have significant importance for data dependencies in data mining. To adapt to exceptions in real data, the measures are used to relax the strictness of CFDs for mor...
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We present SEMANDAQ, a prototype system for improving the quality of relational data. Based on the recently proposed conditional functional dependencies (CFDs), it detects and repairs errors and inconsistencies that emerge as violations of these constraints. We demonstrate the following functionalities supported by SEMANDAQ: (a) an interface for specifying CFDs; (b) a visual tool for automated ...
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ژورنال
عنوان ژورنال: ACM Transactions on Database Systems
سال: 2008
ISSN: 0362-5915,1557-4644
DOI: 10.1145/1366102.1366103