一个分布式数据库，三个站点分别存放数据 实现水平分片和诱导分片-a distributed database, the three sites were stored data to achieve the level of induction into pieces and patch

批量图片生成，以及从数据库导出图片到excel表格，同时生成上岗证-The a batch image generation, and export images to excel table from the database at the same time generate induction certificate