I am confused regarding how exactly relational databases relate to these kinds of research analysis issues...it had always been my understanding that quantitative research was usually analyzed using some sort of statistical package (e.g. SPSS, SAS, R etc). I would appreciate it if anyone could elaborate on both/ either of the following:

1. why relational databases would be used to analyze statistical data (as opposed to a statistical package)

2. how does a relational database differ from a statistical package?

Thanks in advance for any clarity you can provide regarding the above.