What does the FROM clause specify in a SQL statement?

The FROM clause in a SQL statement is essential because it specifies the source of the data, indicating which table or tables the query will retrieve data from. This clause helps the SQL engine understand where to look for the specified fields in the SELECT statement. By defining the desired table, it allows the query to focus on a particular dataset, making it pivotal for accurately executing the database operation.

Identifying the correct table is crucial as the same column names may exist in multiple tables, and therefore, the FROM clause delineates the exact origin of the data. Understanding this helps reinforce how SQL queries are structured and the relational nature of databases, where tables are connected through relationships. This foundational knowledge is key in writing effective SQL statements that yield accurate results from the intended data sources.