### Understanding E-R Diagram: Employees and Departments#### E-R Diagram ExplanationThe Entity-Relationship (E-R) diagram illustrates the relationships between two entities: **Employees** and **Departments**.**Entities:**1. **Employees**: - Attributes: - `firstName` - `lastName` - `ssn` (Social Security Number) - `eID` (Employee ID) - `skills` - `name` - `dateOfBirth` - `age` (depicted with a dashed oval, suggesting it's a derived attribute) 2. **Departments**: - Attributes: - `dName` (Department Name) - `location` - `did` (Department ID) - `budget`**Relationship:**- **WorksIn** - **Cardinality**: The relationship denotes that one department can have many employees (`1:N` relationship), as indicated by 'N' on the side of Employees and '1' on the side of Departments.#### Multiple-Choice QuestionThe question asks for the cardinality ratio of the `WorksIn` relationship between **Employees** and **Departments**.**Options:**a. N:1 b. 1:N c. N:M d. M:N **Correct Answer:** b. 1:NThis explains that an employee works in one department, but a department can have multiple employees.### Key Points for Educational Context:- The E-R diagram is a vital tool in database design.- Understanding attributes and their relationships is crucial for designing efficient databases.- Cardinality is essential for modeling real-world relationships accurately within databases.This diagram and explanation help students visualize and comprehend the structure and relationships within an organization's data.

Option (1) is right choiceIn works_for binary relationship type Department: Employee is of…

Answered: Consider the following E-R diagram O b.…