DML is the language for accessing and manipulating the data organized by the appropriate data model.

DML is also known as query language.

Two classes of languages

• Procedural– user specifies what data is desired and how to compute the data
• Declarative (nonprocedural)– user specifies what data is desired without specifying how to compute the data

SQL is the most widely used query language.

SQL is mostly regarded as nonprocedural.