The Data Environment Designer allows you to create and manipulate the following objects: DataEnvironment. This is the highest-level object in the designer, but it really is only used to group the other content; it isn’t used for programming.; DEConnection. This determines which database will be used, how the database will be accessed, and with what permissions.; DECommand. This is the actual definition of the data accessed within the DEConnection. It can refer to a table, an SQL statement, or a stored procedure.