I just had a look for the cover letter, ,,say too much for your master studying which is not that important,,,too less for your work experience which is important!!!
You are a experienced database developer but not a student who just completed his/her master degree,,,
I was a PL/SQL developer,,,but you won't find many jobs for PL/SQL, T-SQL,,,
but SQL is really popular in oz,,even in some none-it industry, such as marketing,,data analysis,,,
currently I am working as data analyst with Teradata, SAS..
Just a idea for you to choose your next job direction,,,