New database created

Hi,
Just created new database to converge to separate SN's. Couple questions.
a) How do I check that every hand has been imported. I.e. I have datamined a lot of hands and want to compare the total hands between the two databases.
which leads to the next question.
b) Should I delete the last database? If so, how do I go about it? (don't want to mess anything up).
Just created new database to converge to separate SN's. Couple questions.
a) How do I check that every hand has been imported. I.e. I have datamined a lot of hands and want to compare the total hands between the two databases.
which leads to the next question.
b) Should I delete the last database? If so, how do I go about it? (don't want to mess anything up).