The worldâs coral reefs will quickly dissolve if greenhouse gas emissions continue on current trends, a new simulation hasâ¦
noun, plural indexes, indices. [in-duh-seez] /ËÉªn dÉËsiz/ (Show IPA) 1. (in a nonfiction book, monograph, etc.) a more or less detailed alphabetical listing of names, places, and topics along with the numbers of the pages on which they are mentioned or discussed, usually included in or constituting the back matter.
In most cases, an index is used to quickly locate the data record(s) from which the required data is read. In other words, the index is only used to locate data records in the table and not to return data. A covering index is a special case where the index itself contains the required data field(s) and can answer the required data.