In SQL, what must a statement contain at least one of?

In SQL, what must a statement contain at least one of?

• A. Identifiers
• B. Keywords
• C. Expressions
• D. Operators

Answer: (B)

SQL statements convey a specific action, and that action is identified by a keyword such as SELECT, INSERT, UPDATE, or DELETE. Every valid statement needs at least one keyword to tell the database what to do. Other parts like identifiers (table or column names), expressions (calculated values), and operators (=, >, AND) appear inside the statement, but they do not by themselves define the operation. For example, SELECT * FROM employees; includes the keyword SELECT, which declares the operation to retrieve data. If you write just a table name or a bare value, SQL isn’t forming a statement because there’s no keyword indicating the action. Hence, a statement must contain a keyword.

SQL statements convey a specific action, and that action is identified by a keyword such as SELECT, INSERT, UPDATE, or DELETE. Every valid statement needs at least one keyword to tell the database what to do. Other parts like identifiers (table or column names), expressions (calculated values), and operators (=, >, AND) appear inside the statement, but they do not by themselves define the operation. For example, SELECT * FROM employees; includes the keyword SELECT, which declares the operation to retrieve data. If you write just a table name or a bare value, SQL isn’t forming a statement because there’s no keyword indicating the action. Hence, a statement must contain a keyword.