tokens: You do n't say what tools you 're using , but if you get Oracle SQL Developer , it includes a debugger that allows you to step through the code line by line , set breakpoints , and so forth - all the typical features of a debugging GUI .
ner_tags: O O O O O O O O O O O O O O B-Application I-Application I-Application O O O O B-Application O O O O O O O O O O O O O O O O O O O O O O O O O O O O