Query Neighbour Algorithm 1

I create a Maven project.

Then...

A kind of Query Neighbour algorithm is implemented. But I do not know the connection information nor the database structure and thu I need the below help. Also I think it may be better for someone at school to run it as it will be quite some network delay for me in mainland I think.

Please help me to complete the sql queries (You can search for "query" to find where I need you) in QueryNeighbour.java as well as the connection information in DatabaseConnector.java. I or someone at school can test it then.

I will go on to 1NN after the first method is tested ok.