Let's do an ERD model that satisfies the conditions described below. The diagram must be drawn at the data logical level ie. the entities must be described with a sufficient number of properties (table column descriptions) for their operation. "Sufficient" means that the primary keys of all entities (Primary Key), foreign keys of relationships (Foreign Key) and all those properties (attributes) of entities that are necessary for the functioning of the functionality specified in the description of the task and in the exercise lesson are described. Crow's Foot Notation.

Slave Company Database Analysis:

We have an organization called "Slaver". The organization/company engages in slave leasing. Slaves have several departments. The company deals with both short and long-term slave leasing. Departments are divided into groups. There are 5 people in each group and the leader of the group is the Master who monitors and controls the work of his subordinates. Each department has no more than 2 groups. The company employs 50-70 people.

The company has several clients interested in renting slaves. The company has its own customer database. The database contains information about the customer, his preferences, his contact details, etc. The company also has its own database of slaves. The database contains information about slaves, their characteristics, race, gender, skills, etc.

The company uses two types of documents:

- slave leases;

- applications for renting slaves.

Slave rental contracts are drawn up in two copies: one for the client, one for the company. The contract contains information about the slave, rental period, price, rental conditions, obligations of the parties, etc. The contract is signed by the client and the company representative.

Requests for renting slaves are processed by the client. The application contains information about the client, slave, rental period, price, leasing conditions, obligations of the parties, etc. The application is signed by the client.

The company also has its own website. On the website, customers can find information about the company, its services, slaves, etc. Customers can also fill out and submit a slave rental application on the website.

Workers and even slaves can get days off. Days off are usually given on weekends or holidays.

The organization has its own bank account. The company receives payments from customers through this bank account.

Slaves don't get paid, but workers do. Employees get paid once a month. The amount of salary is different for different employees and depends on the position and seniority.

The company is interested in increasing profits. Therefore, he is constantly looking for new ways to increase his income. For example, the company offers its customers discounts, special offers, etc.

There are also thoughts about expanding the business. Therefore, the organization is constantly looking for new ways to attract new customers. For example, the company participates in various exhibitions, organizes advertising campaigns, etc.

Slaves may also have some diseases or health problems. In this case, the company is obliged to provide the slave with medical care.

The company also cares about the safety of its employees and slaves. Therefore, the company has insurance policies for its employees and slaves.

The safety of your workplace is also important. Therefore, the company has security cameras installed in its premises.