The CD burners are on the machines in the front of the lab. You may want to look at this site as somewhat of a tutorial for Access 2000. It is the bridge between real-world objects and the database model that reside in the computer. It is used to consolidate the different views of the data at the conceptual level. Importance of data modeling The process of producing a data model allows us to see the options of different representations Designers, programmers, and end users see data in different terms.
Data modeling helps communication by making abstract the real-world complexities.
We will use an E-R diagram here. This is a high-level model that concentrates on the database structures and constraints Used to consolidate the different views of the data at the conceptual level. An entities is some real-world object about which we want to keep information. An entity must have an attribute or set of attributes that is unique. This is the primary key.