How to get captions for figure and table in the format chapterno.x?

[Ananda Murthy R S]

Hello:

I am writing a book using komascript book class. In this, I am getting
captions for figures and tables like Figure x, Table x. But I want  
captions like Figure 1-34, Table 2-15. How to do this?

Please help. Thanks for your help.

Regards,

Ananda Murthy R S