Combinatorial Approach for Preventing SQL Injection Attacks

1 explane the tittle ?

2 what is Combinatorial Approach ?

3 advantages ,disadvatages ?

4 feature work for this paper ?

5 types of attacks ?

6what is signature based meathod ?

7 what is hirschberg algorithm?

8 which books & authors i reffered or websites ?

I think the ppt in this thread has some details about the algorithm and all:
http://studentbank.in/report-prevention-...r-approach

And in the pdf you posted , the hirscheberg algorithm is given in a bit more mathematical way. Here you can see a simplified form:
http://en.wikipediawiki/Hirschberg%27s_algorithm