What is the structure of index?

An index typically consists of a list of entries or keyWords that point to specific data locations, often organized in a hierarchical or alphabetical order. It may include additional information such as page numbers, references, or metadata to aid in locating the content efficiently. In databases, an index can be a data structure (like a B-tree or hash table) that improves the speed of data retrieval operations. Overall, the structure of an index is designed to optimize search and access to information.