![]() The approach is essentially top-down, in that the first step is to look overall at the requirements for the application being developed, identifying the entities involved. This technique has become a widely used approach in the development of database applications. The main approach described in this chapter is called Entity-Relationship Modelling. ![]() This chapter is the first to address in detail the extremely important topic of database design. In parallel with this chapter, you should read Chapter 11 of Thomas Connolly and Carolyn Begg, "Database Systems A Practical Approach to Design, Implementation, and Management", (5th edn.). Map the entities into tables suitable for Relational database implementation. Converting many-to-many relationships into relationsĪt the end of this chapter you should be able to:Īnalyse a given situation to identify the entities involved.īe able to identify the relationships between entities, and carry out any necessary transformations.ĭevelop the model further by identifying attributes for each entity.Mandatory for one entity, optional for another entity: many end optional. ![]()
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