What Does Index (IDX) Mean?
In database systems, an index (IDX) is a data structure defined on columns in a database table to significantly speed up data retrieval operations. An index is a small copy of a database table sorted by key values. Without an index, query languages like SQL may have to scan the entire table from top to bottom to choose relevant rows.
Techopedia Explains Index (IDX)
An index on a database table must be created with care, as indexes consume space and are stored in the database. An index can also cause write operations to take more time, as the index must be updated when the underlying table is updated.
