A Level Computer Science OCR Test 2025 – 400 Free Practice Questions to Pass the Exam

The SQL FROM clause plays a crucial role in forming a query by identifying which tables should be accessed for retrieving data. When a query is executed, the SQL engine needs to know where to look for the information specified in the SELECT statement. The FROM clause provides this information by listing the tables from which the data has to be pulled.

For example, in a statement like `SELECT name FROM employees;`, the FROM clause tells SQL to retrieve the 'name' field from the 'employees' table. This reinforces the concept that the FROM clause is essential for targeting the data source within the database.

Other choices, such as specifying selected fields or setting conditions, represent different components of an SQL query. The SELECT statement is responsible for indicating the specific fields to be retrieved, while the WHERE clause is used for filtering the records based on specified criteria. Lastly, creating new tables falls under the scope of the CREATE TABLE statement, which is separate from data retrieval operations.