You might have heard of DDL and DML and been confused. Are they part of SQL or are they their own language? Actually Yes and No…

If you look at it as a purist computer programmer or an academic, then you will probably going to say they are all different languages, you would not be wrong. However for someone like me, I view them as a subset of commands used in the SQL language.

DDL: Data Definition Language is a set of commands used to create, modify, or drop databases, tables, views, indexes, schemas, and users.

DML: Data Manipulation Language is a set of commands used to add data to a table, move data around, read data, update data, or delete data.