A stock market, equity market or share market is the aggregation of buyers and sellers (a loose network of economic transactions, not a physical facility or discrete entity) of stocks (also called shares), which represent ownership claims on businesses; these may include securities listed on a public stock exchange as well as those only traded ...
Redundancy is a system design in which a component is duplicated so if it fails there will be a backup. Redundancy has a negative connotation when the duplication is unnecessary or is simply the result of poor planning.
Definition - What does Obsolete mean? Obsolete refers to outdated computer hardware, software, technology, services or practices that are no longer used, even if they are in working condition. A technology often becomes obsolete when replaced by a newer or better technology.