040000 tree 3342e0d0b4629ec8b81f46e88b20685f85881ba6	0000-Area0
040000 tree 2cdb2f4e529e40bdf271a97c4be8204eee9f906b	1000-Hadoop
040000 tree 6cab2e872d5acb34800aad389c80a2e224f789ca	2000-RDBMS
040000 tree 38c9bd8f52ad493cafe31ea5fa791fec44a672b2	3000-Cloud
040000 tree 217b03c822ca3c54981520244ffbd9e6de0ca894	4000-MachineLearning
040000 tree 765555bdd3db6b8754358fad4644ec1a70fd1676	5000-Couchbase
040000 tree 275244df8d09d4b09c3867b4bc6324172d096fa7	6000-Trino