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'''The Chase''' is a simple [[fixed point iteration|fixpoint algorithm]] testing and enforcing implication of data dependencies in [[database systems]]. It plays important roles in [[database theory]] as well as in practice.
It is used, directly or indirectly, on an everyday basis by people who design databases, and it is used in commercial systems to reason about the consistency and correctness of a data design.{{cn|date=November 2012}} New applications of the chase in meta-data management and data exchange are still being discovered.
The Chase has its origins in two seminal papers, one by [[David Maier]], [[Alberto O. Mendelzon]], and [[Yehoshua Sagiv]]<ref>
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