Query processing|Modern Database management system|SNS INSTITUTIONS

Описание: Query Processing includes translations of high-level Queries into low-level expressions that can be used at the physical level of the file system, query optimization, and actual execution of the query to get the actual result.

High-level queries are converted into low-level expressions during query processing. It is a methodical procedure that can be applied at the physical level of the file system, during query optimization, and when the query is actually executed to obtain the result.

It needs a basic understanding of relational algebra and file organization. It includes the variety of tasks involved in getting data out of the database. It consists of converting high-level database language queries into expressions that can be used at the file system's
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