Who discovered index?

The concept of an index has evolved over time, but one of the earliest uses can be attributed to the Roman philosopher and mathematician, Cicero, who discussed the idea of indexing in his works. In the modern context, the development of indexed data structures in computer science is often associated with pioneers like Charles Babbage and later, in the 1970s, the formalization of indexing techniques in databases by researchers such as Edgar F. Codd. Thus, the "discovery" of indexing cannot be attributed to a single individual but rather to a collective advancement in various fields.