The answer to your question is software.
Answer:
A well design input screen should:1.Be titled2.Navigation aids should be used
Explanation:
Answer:
Data manipulation languages are used for the retrieval of the,insertion,deletion and modification of data.
Explanation:
Data Manipulation Languages(DML) are used to insert,delete,update,modify the data in the database.
The commands used to do these operations are as following:-
INSERT INTO :-This command is used to insert values in the database.
DELETE:-It is used to delete existing records from the table.
UPDATE:- It is used to modify the records in the table.
SELECT:- It is used to select data from database.
D. All of these
Reason being, they wouldn't have been made if something hasn't been discovered about them.