040000 tree 107db91afe5620891231ba3510c10c90ae4bb8b3	simplerdbms
040000 tree 3eac8a6200dce039834d29086974012bf8d99ca2	simpleuml
040000 tree 0ca90b5f5fc4364a83977ef1eea57b60bc3b2985	simpleuml2rdbms