040000 tree 57843e16f984de287acb94259e89538d6ae4e083	core
040000 tree a86618821301c654027d42f8016089908bb3a175	mongodb
040000 tree 74fa0a7d696ec3cb1e8eab0479eb9619da70a141	mysql
100644 blob ae0d3ce432e95ca50d4362d1cafa547714642b68	pom.xml
040000 tree bcecef19d9511c2852a0919de27fe7822fd5b1f8	postgres