Data modeling is the process of creating a visual representation of the information a system will use, store, and manage. It involves defining and structuring data elements and their relationships to one another. This is typically achieved through a variety of diagrams, including entity-relationship diagrams (ERDs), which help in understanding and organizing data requirements systematically.
Key components of data modeling include:
- Entities: Objects or concepts, often represented as tables in databases (e.g., customers, orders).
- Attributes: Characteristics or properties of entities (e.g., customer name, order date).
- Relationships: Connections between entities, which describe how they interact with each other (e.g., a customer places an order).
Data modeling is an essential step in the database design process, ensuring that the data architecture aligns with business requirements and can support the necessary queries and data management activities.
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