What are the differences between procedural and non-procedural DML

Differences between procedural and non-procedural DML:

Procedural DML	Non-Procedural DML
(i) Procedural language is a traditional programming language in logical step-by-step process for solving a problem is too specified.	(i) In non-procedural programming language, programmers and users specify the results they require, but do not specify how to do.
(ii) Procedural DML requires a user to specify what needed and how to get these data.	(ii) Non-procedural DML requires a user to specify what data needed and are needed without specifying how to get those data.
(iii) Procedural DML are hard to learn.	(iii) Non-procedural DML is easy to learn.
(iv) Procedural DML is more difficult to use than non-procedural DML.	(iv) Non-procedural DML is easier to use the procedural to use the procedural DML.
(v) Generate the code more efficiently.	(v) Generate the code less efficiently.
(vi) Example: Relational Algebra.	(vi) Example: SQL.