Database Concepts

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UML AND DATA MODELING
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Unified Modeling Language (UML) is a standardized specification language for object modeling in software engineering. UML is a general-purpose modeling language that includes a graphical notation used to create an abstract model of a system (UML model).

As the importance and strategic value of software increases, the industry looks for techniques to automate the production of software and to improve quality and reduce cost and time-to-market. These techniques include:
- Component technology,
- Visual programming,
- Patterns and frameworks.

Businesses also look for techniques to manage the complexity of systems as they increase in scope and scale. In particular, they recognize the need to solve recurring architectural problems, such as:
- Physical distribution,
- Concurrency,
- Replication,
- Security,
- Load balancing and
- Fault tolerance.

Additionally, the development for the World Wide Web, while making some things simpler, has exacerbated these architectural problems. The UML is designed to respond to these needs.

The power of the Unified Modeling Language is not limited to object oriented software development. More and more, the UML is being applied to other areas of software development, such as:
- Data modeling,
- Enhancing practitioners' ability to communicate their needs and assessments to the rest of the team.

Data analysts primarily gather data out of documented business requirements. The database itself traditionally has been described by entity relationship diagrams, using graphic representation that is similar but not identical to that of the UML.
The UML can be used to describe the complete development of relational and object relational databases (note, object oriented databases are supported by UML through modeling of persistent classes) from ...