d, and
how the items in the database will be related to each other. [Computer and Information Sciences] 
n., The product of the database design process which aims to identify and organize the required data logically and
 physically. A data model says what information is to be contained in a database, how the information will be used, and how
 the items in the database will be related to each other. [Computer and Information Sciences] 
n., An abstract model of some real-world situation or domain of interest 