Final answer:
The SQL command that enters current data into a structure is the INSERT command.
Step-by-step explanation:
The SQL command that enters current data into a structure is the INSERT command. This command allows you to add new records to a database table. Syntax for the INSERT command is:
INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...);
For example, if you have a table called Students with columns Name and Age, the INSERT command to add a new student named John who is 18 years old would be:
INSERT INTO Students (Name, Age) VALUES ('John', 18);