Ich mache oft Fehler bei der ternären Beziehung :) Kann mir jemand sagen, ob diese stimmt? Stimmt der Rest des Models auch?
"A pharmaceutical company employs employees which have an id, a name, gender, and a salary. There is one CEO, who is head of the employees. Some employees are salesperson with a specialisation, and some are scientists. Each salesperson is responsible for one region and sells different products to a few clients. Due to their Regions have an id, a name, and a list of countries that belong to it. Scientist have prefixes and experience in some field of research, and they develop products. These products are given an id, a name and a price and they have one or more indications. Each product is also promoted through several campaigns that have a start date and end date and a name. Clients have a name, live in a certain country and are given an id. Different clients buy numerous products from one salesperson."