{"push_id":774540016,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"5f3924cb3cd1bd682703dd9d086ade504959f772","before":"6546a691080ff94d00cee63f55973801dfca40ce","commits":[{"sha":"5f3924cb3cd1bd682703dd9d086ade504959f772","author":{"email":"740a18b24d61803e08e1a2a77e4253b55827b6f4@gmail.com","name":"Liu JD"},"message":"Update README.md","distinct":true,"url":"https://api.github.com/repos/bj015852/Database-System-Concepts/commits/5f3924cb3cd1bd682703dd9d086ade504959f772"}]}