Description: Full table scan is a query method in databases that involves examining every row in a table to retrieve data. This approach is commonly used in database management systems, where the data structure is designed to handle large volumes of information. Unlike queries that use indexes, a full table scan does not rely on specific search criteria, which can result in slower performance, especially in tables with a large number of rows. However, this method can be useful in situations where a complete view of the data is required or when adequate indexes are not available. A full table scan may be necessary for analysis or auditing tasks, where access to all records without restrictions is needed. Although it is not the most efficient option, its simplicity and ability to access all data make it a valuable tool in certain circumstances.
