A database model that describes the attributes of entities and the relationships among them. An entity is a file (table). Today, ER models are often created graphically, and software converts the ...

A table in a database holds the attributes for one entity only. Data can then be added in the form of records. Rather than storing information in one table, relational databases store data across ...

A one-to-many relationship exists when one entity can be present in many different instances of another entity. One-to-many relationships are the most common relationships in correctly implemented ...