Crowd Op: A Query Optimization Technique

Abstract

In query optimization problem in crowd sourcing system. Asserting crowd sourcing is designed to get the
quick output with burden on user. The user will only give the SQL query for output and the system takes the responsibility
of compiling the task. A given query have many other ways to execute and the difference in crowd sourcing cost between
the best and the worth plan of magnitude. Therefore, as in DBMS, query optimization is important to crowd source for
asserting query Optimization interface. CROWD OP, consider both cost and latency in the query optimization objective
and generate a good balance between the cost and latency. An efficient algorithm in the CROWD OP for optimizing is
selection, join and complex selection and join queries with the top-k algorithm.