Domain Name System o Providing the service for querying the corresponding ip address or the domain name o a distributed database system o Database is divided into several sub-database and each sub-database is self-maintained e Using client-server architecture o Using tree data structure o By replication and caching to achieve consistency, efficiency, and stability o The largest database system in the world4 Domain Name System  Providing the service for querying the corresponding IP address or the domain name  A distributed database system ⚫ Database is divided into several sub-database and each sub-database is self-maintained ⚫ Using client-server architecture ⚫ Using tree data structure ⚫ By replication and caching to achieve consistency, efficiency, and stability. ⚫ The largest database system in the world