Physical and Logical Database Design

After all chore requirements have been gathered for a proposed net, they must be modeled. Models are created to visually represent the proposed net profit so that melodic line requirements can easily be associated with network objects to ensure that all requirements have been entirely and accurately gathered. essentially information modeling can fall into two types of categories: animal(prenominal) modeling and coherent modeling. Logical modeling deals with gathering line requirements and converting those requirements into a model. The reproducible model revolves around the inevitably of the demarcation, not the network, although the needs of the business are used to establish the needs of the network. Logical modeling involves gathering information about business processes, categories of data, and organizational units. After this information is gathered, diagrams and reports are produced including entity relationship diagrams, business process diagrams, and eventually process flow diagrams. The diagrams produced should show the processes and data that exist, as well as the relationships between business processes and data. Logical modeling should accurately render a visual facsimile of the activities and data relevant to a particular business.

The diagrams and documentation generated during logical modeling is used to determine whether the requirements of the business have been completely gathered. Management, developers, and end users alike review these diagrams and documentation to determine if more work is required before physical modeling commences. natural deliverables for a logical model include entity relationship diagrams, business process diagrams and some type of user feedback report. Entity relationship diagrams incorporate of providing the development team with a picture of the different categories of data for the business, as well as how these categories of data are connect to one another. The business process diagram illustrates all the boot and child... If you want to get a full essay, order it on our website: Orderessay

Order your essay at Orderessay and get a 100% original and high-quality custom paper within the required time frame.