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Code diagrams (level 4): provide additional details about the design of the architectural elements that can be mapped to code. The C4 model relies at this level on existing notations such as Unified Modelling Language (UML), Entity Relation Diagrams (ERD) or diagrams generated by Integrated Development Environments (IDE).
For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. This could be modeled in an object-oriented implementation by a "Person object " with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a ...
Defining objects, creating class diagram from conceptual diagram: Usually map entity to class. Identifying attributes and their models. Use design patterns (if applicable): A design pattern is not a finished design, it is a description of a solution to a common problem, in a context. [7]
Java 6, C++, CORBA Unknown Eclipse and MS VS.NET 2005 BOUML: Yes Yes Yes Yes C++, Java, PHP, IDL, Python, MySQL C++, Java, PHP, MySQL Unknown UML 2. Solid code roundtrip, fast. Extensible through "plug-outs" written in C++ or Java Cacoo: Yes Unknown Unknown Yes Unknown Unknown
For example, we can indicate, using an arrowhead that the pointy end is visible from the arrow tail. We can indicate ownership by the placement of a ball, the role the elements of that end play by supplying a name for the role, and the multiplicity of instances of that entity (the range of number of objects that participate in the association ...
The entities represented by a data model can be the tangible entities, but models that include such concrete entity classes tend to change over time. Robust data models often identify abstractions of such entities. For example, a data model might include an entity class called "Person", representing all the people who interact with an organization.
A third version of Entity Framework, version 4.1, was released on April 12, 2011, with Code First support. A refresh of version 4.1, named Entity Framework 4.1 Update 1, was released on July 25, 2011. It includes bug fixes and new supported types. The version 4.3.1 was released on February 29, 2012. [10]
The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".