This Unified Modeling Language (UML) tutorial shows how to start with a use case and how to elaborate it into activity, class, sequence, and communication diagrams. This tutorial is a must for beginners who want to understand the relationships between different UML diagrams! It introduces the life cycle and evolution of a granular business case.

Some databases have more complex requirements than do the more traditional applications. This led to the development of additional semantic data modeling concepts that were incorporated into conceptual data models such as the Entity-Relationship (ER) model.

The Unified Modeling Language (UML) has arguably succeeded in becoming the most commonly used modeling notation for software development. But modeling in the software community seems largely to mean simply drawing pictures, either to represent the problem domain or to blueprint a solution, without a precise enough meaning to fully specify the functionality of the system being developed. As a result, the UML standard, up to and including the latest formal version (UML 2.4.1), does not define the semantics of UML models at all precisely.

The Modelio development team is pleased to announce the release of Modelio 3. Modelio is an open source environment whose core is licensed under version 3 of the GPL from GNU.

Dr. Richard Soley, CEO of the Object Management Group, discusses the upcoming changes in the Unified Modeling Language (UML).

This video introduces the viewer to the concept of conceptual data modeling and describes some of the details of the Entity-Relationship diagram (ERD).

This paper presents an approach that utilizes object technology and the UML notation for the development of communication protocols. Object technology has been widely adopted in many application domains and the Unified Modeling Language (UML) has become the new industry standard for modeling software-intensive systems. UML is currently used for modeling of just about any type of applications, running on any type and combination of hardware, operating system, programming language and network. However,protocol design is still based on traditional methodologies.

Atego has announced the availability of a PTC solution that integrates the comprehensive systems and software lifecycle management capabilities of PTC Integrity software with the Atego Artisan Studio systems and software modeling environment. This integration delivers end-to-end engineering lifecycle management with full control and traceability over Requirements, Models, Source Code, and Tests.

This video discusses some of the data modeling issues encountered while transitioning from a relational database to NoSQL. Large data sets are driving adoption of NoSQL technologies and transitioning from relational persistence to NoSQL persistence is non-trivial.

The control-flows for five kinds of UML use cases are analyzed: for common use cases, variant use cases, component use cases, specialized use cases and for ordered use cases. The control-flow semantics of use cases – and of the uses-relation, the extends-relation and the precedes relation between use cases – is described in terms of flowgraphs. Sequence diagrams of use cases are refined to capture the control-flow adequately. Guidelines are given for use case descriptions to attain a well-defined flow of control.