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It Rea Approach

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Submitted By czharsilentheart
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Resources, Events, and Agents Model * REA is an approach to database design meant to overcome problems with traditional approaches: * formalized data modeling and design of IS * use of centralized database * use of relational database structure * collects detailed financial and non-financial data * supports accounting and non-accounting analysis * supports multiple user views * supports enterprise-wide planning * REA models consists of three entity types and the associations linking them. * Resources * Events * Agents

Resources in the REA Model * Resources – the ‘assets’ of the company * things of economic value * objects of economic exchanges able to generate revenue * objects that are scarce and under the control of the organization * can be tangible or intangible * Does not include some traditional accounting assets: * artifacts that can be generated from other primary data * for example, accounts receivables

Events in the REA Model * Events are phenomena that effect changes in resources. * a source of detailed data in the REA approach to databases * Events fall into two groups: * Economic – increases or decreases resources * Support – control, planning, and other management activities; but do not directly affect resources *
Agents in the REA Model * Agents can be individuals or departments. * Participate in events * Affect resources * Have discretionary power to use or dispose of resources * Can be inside or outside the organization * Clerks * Production workers * Customers * Suppliers, vendors * Departments, teams

Basic REA Model

Resources, Events, and Agents Model * Another key feature of the REA model is economic

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