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About: Database repair     Goto   Sponge   NotDistinct   Permalink

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The problem of database repair is a question about relational databases which has been studied in database theory, and which is a particular kind of data cleansing. The problem asks about how we can "repair" an input relational database in order to make it satisfy integrity constraints. The goal of the problem is to be able to work with data that is "dirty", i.e., does not satisfy the right integrity constraints, by reasoning about all possible repairs of the data, i.e., all possible ways to change the data to make it satisfy the integrity constraints, without committing to a specific choice.