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What is DML (Data Manipulation Language ?

What is DML (Data Manipulation Language

This language that enable user to access or manipulate data as organised by appropriate data model.

Procedural DML or Low level: DML requires a user to specify what data are needed and how to get those data.

Non-Procedural DML or High level: DML requires a user to specify what data are needed without specifying how to get those data.