Unable to Start Simple Transaction in SQlite

Here we go,
I found the answer to my Questio. Actually i am using DBBrowser for SQlite. And upto my knowledge, you have to commit every statement in DBBrowser for SQlite. I First created Tables, established Relationship, and without committing them all, i then tried to start that Transaction, that's why it was saying

cannot start a transaction within a transaction: Begin;

What i did, first issued a single

commit

to commit the statements which created tables, and then started Transaction. And it worked fine.

Thanks