CREATE TABLE project_versions (
  project_id  INT         NOT NULL,
  version     INT         NOT NULL,
  upload_time BIGINT      NOT NULL,
  uploader    VARCHAR(64) NOT NULL,
  file_type   VARCHAR(16),
  file_name   VARCHAR(128),
  md5         BINARY(16),
  num_chunks  INT,
  resource_id VARCHAR(512) DEFAULT NULL,
  PRIMARY KEY (project_id, version)
);

CREATE INDEX version_index
  ON project_versions (project_id);
