Browsing Computer Science by Subject "Query Optimization"

Now showing items 1-3 of 3

Clustering Dependencies over Relational Tables

Gao, Yuchen (University of Waterloo, 2016-01-22)

Integrity constraints have proven to be valuable in the database field. Not only can they help schema design (functional dependencies, FDs [1][2]), they can also be used in query optimization (ordering dependencies, ODs ...
A Cost Model for a Fingered Join Operator in Relational Query Plans

Prathish, Vishnu (University of Waterloo, 2015-08-12)

We introduce the finger aware cursor operator for relational join queries. It scans a list of tuples in a finger enabled manner when a nested loop join operation is performed. Using this scan operation, we improve the ...
Query Optimization for On-Demand Information Extraction Tasks over Text Databases

Farid, Mina H. (University of Waterloo, 2012-03-27)

Many modern applications involve analyzing large amounts of data that comes from unstructured text documents. In its original format, data contains information that, if extracted, can give more insight and help in the ...