Data Modeling Essentials for Databases
Data Modeling Essentials for Databases Data modeling is the plan that turns ideas into a structure a database can store and act on. A good model captures essential entities, their attributes, and the relationships between them. It acts as a contract: developers know where to read and where to write. Think of the core ideas: entities, attributes, relationships, and keys. An entity is a real thing you store about, like a Customer or a Product. Attributes are the details you record, such as name, email, or price. Relationships show how entities connect, for example a Customer places Orders. Primary keys identify each record, and foreign keys link related records across tables. ...