A Survey of Techniques for Answering Top-K Queries

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Provided by: The World
Topic: Data Management
Format: PDF
Top-k queries are useful in retrieving top-k records from a given set of records depending on the value of a function F on their attributes. Top-k queries are intended for retrieving top-k records from the database which are subjected to minimization or maximization of the function F on the attributes of the relation. This kind of queries appears frequently in many applications such as college ranking, job ranking etc. Due to the popularity of top-k queries, many techniques have been proposed which are mainly includes sorted-list based, layer based and view based techniques.
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