2. Given a situation containing entities, business rules, and data requirements, create the conceptual model of the database using a database modeling tool.
3. Given an existing relational database schema, evaluate and alter the database design for efficiency.
4. Given an existing database structure demonstrating efficiency and integrity, design the physical tables.
You have been asked to extend the database you developed in Lab 2 to also include customer data, to populate the tables in the database with sample data, and to create some queries using this data to illustrate how the database can supply information that is useful to management. The purpose of this lab is to provide experience with modifying a database, entering data into tables, and creating simple queries.
Using MS Visio, you will add a customers entity to the ERD you created in Lab 2. Based on the modified ERD, you will add the corresponding customers table to the MS Access database from Lab 2. You will then enter sample data into the tables in this database and create some basic queries to illustrate how data from the tables can be presented to satisfy managers’ information needs.