What is "dml"

Data Manipulation Language (DML) is a family of computer languages used for retrieval, inclusion, removal, and modification of information in databases. It can be procedural, which specifies how the data should be obtained from the database; it can also be declarative (not procedural), in which users do not need to specify the access path, that is, how the data will be obtained. The SQL standard is non-procedural. Dmls were initially used only by computer programs, but (with the emergence of SQL) have also been used by people.