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Information systems and computer sciences use data modeling to manage and organize large quantities of structured and unstructured data. A data model describes the information to be stored in vast data management systems like relational databases. Data models do not include unstructured data such as email messages, word processing documents, digital video, audio or image files. Furthermore, data modeling establishes implicit and explicit constrains and limitations of the structured data. A data model is formally known as data model theory.
The term �MainFrame� brings to mind a giant room of electronic parts that is a computer, referring to the original CPU cabinet in a computer of the mid-1960�s. Today, Mainframe refers to a class of ultra-reliable large and medium-scale servers designed for carrier-class and enterprise-class systems operations. Mainframes are costly, due to the support of symmetric multiprocessing (SMP) and dozens of central processors existing within in a single system. Mainframes are highly scalable. Through the addition of clusters, high-speed caches and volumes of memory, they connect to terabyte holding data subsystems.
UML (Unified Modeling Language) is an object-oriented analysis and design language defined by the Object Management Group (OMG). UML is used in the software engineering field and describes a programming language used as a graphical designation to create an abstract model that can be used in a system (UML model).
The term �Web 2.0� refers to the idea of the �New Internet�, or the second wave of the World Wide Web. Web 2.0 is not a specific application or technology, but explains two paradigm shifts within Information Technology, �user-generated content� and �thin client computing�.
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