Orthogonal Views…

A current definition provides us this: or·thog·o·nal   [awr-thog-uh-nl] adjective 1.  Mathematics . a. Also, orthographic. pertaining to or involving right angles or perpendiculars: an                 orthogonal projection. b. (of a system of real functions) defined so that the integral of the product of any           Continue reading “Orthogonal Views…”

Syntax of an ERD – Entity Relationship Diagram

Syntax Rules for an Entity Relationship Diagram: An Entity appears as a Rectangular shape with a Name that is represented in the Singular for the subject of the data contained in this Entity. A Relationship Line can be created between any two or more (or’s and and’s) Entities. A Relationship MUST be valid and readableContinue reading “Syntax of an ERD – Entity Relationship Diagram”

Process Modeling

Flowcharts, Data Flow Diagrams, Swim Lane diagrams, Use Cases and other constructs have been used to reflect what a Business or Systems Analyst thinks the client is describing when they talk about Business Process and the use of information in the conduct of their business. These diagrams have structure, syntax, and rules that have beenContinue reading “Process Modeling”