HSQLDB how to manually insert records

My question is how can I manually add records to hsqldb database. I mean using command line or some client. I know I can use hsqldb ma开发者_开发问答nager but I cannot execute any query with it. It says that there is no table of specified name. What might be the problem?

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Ok the problem was I wasnt connecting to actual database file :) HSQLDB Manager works :p

Cheers