The existing approaches of keyword search over relational databases usually first generate all possible results composed of
relevant tuples and then sort them based on their individual ranks. These traditional methods are inefficient to identify
the top-k answers with the highest ranks. This paper studies the problem of progressively identifying the top-k answers from the relational databases. The approach of progressively identifying the answers is very desirable as it generates
the higher ranked results earlier thereby reducing the delay in responding to the user query. We have implemented our proposed
method, and the experimental results show that our method outperforms existing state-of-the-art approaches and achieves much
better search performance.