Data_base_classes.py

create_nodes(seq_name, data_base) - create nodes in a neo4j 'data_base' DB with 'seq_name' from genbank.

relation_next(data_base, label) - create a relation 'NEXT' in neo4j 'data_base' DB to nodes between 'label' labels.

relation_overlap(data_base, label) - create a relation 'OVERLAP' in neo4j 'data_base' DB to nodes between 'label' labels.