What does Query mean?

A query is a question or request that a user or system sends to obtain specific information or data. In internet search, it is the word or phrase typed into a search engine, based on which matching results are displayed. In databases, a query is a command used to find, filter or modify stored data. In online marketing and SEO, the term comes up with search queries, which reveal what people are actually looking for. A query can be a simple expression or a more complex technical request, and its exact form always depends on the system in which it is used.