java, c #, oracle generating method uuid

1, java generated uuid

string a = UUID.randomUUID().toString()

Reference: https: //blog.csdn.net/qq_36411874/article/details/80360207

 

2, C # generated uuid

string a = Guid.NewGuid();

Reference: https: //cloud.tencent.com/developer/ask/90572

 

3, oracle generated uuid

select sys_guid() from dual

Reference: https: //www.cnblogs.com/alfredxiao/archive/2010/07/13/oracle_guid.html