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  2. Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Entity–relationship_model

    An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).

  3. One-to-many (data model) - Wikipedia

    en.wikipedia.org/wiki/One-to-many_(data_model)

    In systems analysis, a one-to-many relationship is a type of cardinality that refers to the relationship between two entities (see also entity–relationship model). For example, take a car and an owner of the car. The car can only be owned by one owner at a time or not owned at all, and an owner could own zero, one, or multiple cars.

  4. Enhanced entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Enhanced_entity...

    The enhanced entity–relationship (EER) model (or extended entity–relationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entity–relationship (ER) model, used in the design of databases.

  5. IDEF1X - Wikipedia

    en.wikipedia.org/wiki/IDEF1X

    Three levels of view are defined in IDEF1X: entity relationship (ER), key-based (KB), and fully attributed (FA). They differ in level of abstraction. The ER level is the most abstract. It models the most fundamental elements of the subject area - the entities and their relationships. It is usually broader in scope than the other levels.

  6. Data modeling - Wikipedia

    en.wikipedia.org/wiki/Data_modeling

    An entity–relationship model (ERM) is an abstract conceptual representation of structured data. Entity–relationship modeling is a relational schema database modeling method, used in software engineering to produce a type of conceptual data model (or semantic data model ) of a system, often a relational database , and its requirements in a ...

  7. 19 Easy Low-Carb Dinners for Winter - AOL

    www.aol.com/19-easy-low-carb-dinners-120000400.html

    Cozy up this winter with these easy and delicious dinner recipes. These recipes feature tons of seasonal vegetables like cauliflower, squash, leafy greens and root vegetables, like beets and carrots.

  8. Cardinality (data modeling) - Wikipedia

    en.wikipedia.org/wiki/Cardinality_(data_modeling)

    For example, consider a database of electronic health records. Such a database could contain tables like the following: A doctor table with information about physicians. A patient table for medical subjects undergoing treatment. An appointment table with an entry for each hospital visit. Natural relationships exist between these entities:

  9. Oregon allegedly threatened to cancel season if beach ...

    www.aol.com/oregon-allegedly-threatened-cancel...

    A Title IX complaint alleges that an Oregon athletics administrator threatened to cancel the 2021 remaining beach volleyball season.