The last president who ever owned slaves was, ironically, Ulysses S. Grant, elected in 1868 after he had commanded Union forces to victory over the Confederacy in the war that led to the abolition of slavery. Grant owned a slave named William Jones, whom he freed in 1859.
AI and Linux enthusiast. In general, a namespace is a container for a set of identifiers (also known as symbols, names). Namespaces provide a level of direction to specific identifiers, thus making it possible to distinguish between identifiers with the same exact name. For example, a surname could be thought of as a namespace that makes it possible to distinguish people who have the same given name.
DNS Namespace Hierarchy. Like the UNIX file system, DNS domains are organized as a set of descending branches similar to the roots of a tree. Each branch is a domain, each subbranch is a subdomain.The terms domain and subdomain are relative.he entire collection of DNS administrative domains throughout the world are organized in a hierarchy called the DNS namespace. This section shows how the namespace organization affects both local domains and the Internet.