A data definition language $($DDL$)q,\_.$

specifies the operating system parameters that will permit the relational DBMS to function within its environment

specifies what tables will be in the database, what attributes will be in the tables, and which attributes will be indexed

specifies the programming language statements that will be used to access the data in a relational database

is the same as a data manipulation language

is limited to defining the size and type of attributes