Research Cardinality in Entity-Relationship Diagrams

Research Cardinality in ERDs:
- Start by understanding what cardinality means in the context of Entity-Relationship Diagrams (ERDs).
- Cardinality defines the relationship between two entities in terms of how many instances of one entity can or must be associated with instances of another entity.
- Cardinality is essential in database design as it ensures accurate modeling of real-world relationships between data tables.
Types of Cardinality:
- Research and describe the different types of cardinality commonly used in ERDs:
  - One-to-One (1:1): One instance of an entity is related to only one instance of another entity.
  - One-to-Many (1): One instance of an entity is related to many instances of another entity.
  - Many-to-Many (M): Many instances of one entity can be related to many instances of another entity.
- Include examples of how each type of cardinality is represented in an ER diagram.
ER Diagram Example:
- Illustrate how cardinality is represented in an Entity-Relationship Diagram.
- Provide examples or create your own simple diagram that shows entities and their relationships using cardinality.
  - use your activity #8
Tools:
- use an online tool Lucidchart,
- Take a screenshot of your diagram to include in your documentation.
Document Your Research:
- Write about your research on cardinality in ERDs. Explain each type of cardinality with examples and include your ER diagram.
Publish Your Work:
- Publish your findings, examples, and diagrams on Hashnode.com or Medium.com.
- Include screenshots of your ERD diagrams along with your explanations