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2. IDEF1X - Wikipedia

   en.wikipedia.org/wiki/IDEF1X

   Example of an IDEF1X diagram. Integration DEFinition for information modeling (IDEF1X) is a data modeling language for the development of semantic data models.IDEF1X is used to produce a graphical information model which represents the structure and semantics of information within an environment or system.

3. Entity–relationship model - Wikipedia

   en.wikipedia.org/wiki/Entity–relationship_model

   Crow's foot notation, the beginning of which dates back to an article by Gordon Everest (1976), [16] is used in Barker's notation, Structured Systems Analysis and Design Method (SSADM), and information technology engineering. Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes.

4. Cardinality (data modeling) - Wikipedia

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

   Two related entities shown using Crow's Foot notation. In this example, the three lines next to the song entity indicate that an artist can have many songs. The two vertical lines next to the artist entity indicate songs can only have one performer.

5. Barker's notation - Wikipedia

   en.wikipedia.org/wiki/Barker's_notation

   Barker's notation refers to the ERD notation developed by Richard Barker, Ian Palmer, Harry Ellis et al. whilst working at the British consulting firm CACI around 1981. The notation was adopted by Barker when he joined Oracle and is effectively defined in his book Entity Relationship Modelling as part of the CASE Method series of books.

6. Crow foot - Wikipedia

   en.wikipedia.org/wiki/Crow_foot

   Crow's foot notation, a set of symbols used to show relationships in a relational database management system; Crowfoot wrench; Crow's feet, a name for wrinkles in the outer corner of the eyes resulting from aging

7. Prince Andrew's Business Adviser Accused of Being 'Chinese ...

   www.aol.com/lifestyle/prince-andrews-business...

   Prince Andrew is at the center of more controversy.. The Duke of York, 64, who is King Charles' brother, reportedly had close business links with a Chinese national, who is alleged to be a spy ...

8. NYPD’s search for UnitedHealthcare CEO Brian Thompson ... - AOL

   www.aol.com/nypd-divers-continue-search-central...

   NYPD divers Sunday continued to search the Central Park Boathouse pond for potential clues including the gun used in the slaying of UnitedHealthcare CEO Brian Thompson as cops were still hunting ...

9. Discrete mathematics - Wikipedia

   en.wikipedia.org/wiki/Discrete_mathematics

   Discrete mathematics is the study of mathematical structures that can be considered "discrete" (in a way analogous to discrete variables, having a bijection with the set of natural numbers) rather than "continuous" (analogously to continuous functions).