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A data structure diagram is a diagram type that is used to depict the structure of data elements in the data dictionary. The data structure diagram is a graphical alternative to the composition specifications within such data dictionary entries. [1] The data structure diagrams is a predecessor of the entity–relationship model (E–R model
Entities (Actors): labeled boxes; one in the center representing the system, and around it multiple boxes for each external actor; Relationships: labeled lines between the entities and system; For example, "customer places order." Context diagrams can also use many different drawing types to represent external entities.
Diagrams created to represent attributes as well as entities and relationships may be called entity-attribute-relationship diagrams, rather than entity–relationship models. An ER model is typically implemented as a database. In a simple relational database implementation, each row of a table represents one instance of an entity type, and each ...
Example of a Structured Chart. [1] A structure chart (SC) in software engineering and organizational theory is a chart which shows the smallest of a system to its lowest manageable levels. [2] They are used in structured programming to arrange program modules into a tree. Each module is represented by a box, which contains the module's name.
In addition, existing services define relationships differently. As of 2010 [update] , Facebook's social graph is the largest social network dataset in the world, [ 6 ] and it contains the largest number of defined relationships between the largest number of people among all websites because it is the most widely used social networking service ...
The following outline is provided as an overview of and topical guide to interpersonal relationships.. Interpersonal relationship – association between two or more people; this association may be based on limerence, love, solidarity, regular business interactions, or some other type of social commitment.
Knapp's relational development model portrays relationship development as a ten step process, broken into two phases. Created by and named after communication scholar Mark L. Knapp, the model suggests that all of the steps should be done one at a time, in sequence, to make sure they are effective.
In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.