Inproceedings,

EFFICIENT SCHEMA BASED KEYWORD SEARCH IN RELATIONAL DATABASES

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International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), volume 2 of IFIP Advances in Information and Communication Technology, page 13-32. Springer, (December 2012)
DOI: 10.5121/ijcseit.2012.2602

Abstract

Keyword search in relational databases allows user to search information without knowing database schema and using structural query language (SQL). In this paper, we address the problem of generating and evaluating candidate networks. In candidate network generation, the overhead is caused by raising the number of joining tuples for the size of minimal candidate network. To reduce overhead, we propose candidate network generation algorithms to generate a minimum number of joining tuples according to the maximum number of tuple set. We first generate a set of joining tuples, candidate networks (CNs). It is difficult to obtain an optimal query processing plan during generating a number of joins. We also develop a dynamic CN evaluation algorithm (D_CNEval) to generate connected tuple trees (CTTs) by reducing the size of intermediate joining results. The performance evaluation of the proposed algorithms is conducted on IMDB and DBLP datasets and also compared with existing algorithms.

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