Tài liệu Module 6: Beginning Physical Design pptx

Module 6: Beginning Physical Design 178 Module 6: Beginning Physical Design Module Overview Module 3: A Services-Based Approach to Solution Design Module 4: Business Solution Conceptual Design Module 5: Business Solution Logical Design Module 6: Beginning Physical Design Module 1: Course Overview Module 2: Solution Design Using the MSF Module 7: Selecting Solution Technologies Module 8: Solution Design and the Component Object Model Module 9: Designing Solutions with Microsoft Technologies Module 10: Completing the Physical Design Module 11: Designing the Presentation Layer Module 12: Introduction to Functional Specifications Designing Business Solutions Physical Design Basics Activity 6.2: Risks in Requirements and Constraints Physical Design Analysis Review Activity 6.1: Risks of Skipping the Physical Design Physical Design Process Physical Design Research Activity 6.3: Determining a Preliminary Distribution of Components Across a Network Topology Module 6: Beginning Physical Design Module 6: Beginning Physical Design 179 Module 6: Beginning Physical Design 179 ! !! ! Overview In this module In this module " Physical Design Basics " Activity 6.1: Risks of Skipping Physical Design " Physical Design Process " Physical Design Research " Activity 6.2: Risks in Requirements and Constraints " Physical Design Analysis " Activity 6.3: Determining a Preliminary Distribution of Services Across a Network Topology " Review The last phase of the design process is the physical design. Physical design begins after logical design has started, and the project team agrees that there is sufficient information to begin the physical design. Because the physical design evolves from the conceptual and logical designs, it relies on the successful performance of the first two design phases for its own success. This reliance helps ensure that the physical design for a solution is one that the development team can complete successfully, while addressing both business and user requirements. In this module, you will begin learning about the physical design phase of the Microsoft ® Solutions Framework (MSF) Process Model. First, you will learn the basics of physical design. You will then learn about physical design in greater detail through the use of examples and activities based on the Ferguson and Bardell, Inc. case study. After completing this module, you will be able to: " Explain the need for physical design in the process of designing a business solution. " Describe the role of physical design in the MSF Design Process. " Describe the steps of physical design. " Create a preliminary services topology. " Identify the risks in conflicts between solution requirements and physical constraints. Slide Objective To provide an overview of the module topics and objectives. 180 Module 6: Beginning Physical Design 180 Module 6: Beginning Physical Design ! !! ! Physical Design Basics In this section In this section " Physical Design in the Design Process " Physical Design: The Search for Structure " Goals of Physical Design " Perspective of Physical Design " Perspective Captured in Component Specifications " Clarifying Physical Design " Value of Physical Design During physical design, you will apply real-world technology considerations and constraints to the designs and models that you created during conceptual and logical designs. Before delving into the technology aspects, however, you must first learn the basics of the physical design phase. In this section, you will begin to learn about the physical design phase. You will learn about the perspective that should be used during physical design and its value. You will continue learning about physical design through Modules 7, 8, and 9 and will complete physical design in Module 10: Completing Physical Design. Slide Objective To provide an overview of the topics and activities in this section. Module 6: Beginning Physical Design 181 Module 6: Beginning Physical Design 181 Physical Design in the Design Process Conceptual Design Logical Design Physical Design Components, User Interface, and Physical Database Scenarios Services and Objects, User Interface, and Logical Database Physical design is the third phase of the MSF Design Process Model. Physical design involves clearly defining the components and their location so that the development team can begin to develop. Its inputs are the business object model and the other supporting information created in logical design. Its output is the solution deployment model, the component specification, and a list of candidate implementation technologies. Slide Objective To place physical design in context with the rest of the design process. Lead-in As you learned in Module 2, physical design is the third phase in the MSF Design Process. 182 Module 6: Beginning Physical Design 182 Module 6: Beginning Physical Design Physical Design: The Search for Structure " Definition The process of describing components, services, and technologies of the solution from the perspective of the development team " Purpose To apply real-world technology constraints to the logical model, including implementation and performance considerations " Output A set of components, user interface design for a particular platform, and a physical database design Physical Design Components, User Interface, and Physical Database Physical design is the process of describing the components, services, and technologies of the solution from the perspective of the development team. Physical design takes into account performance and implementation issues, and applies technology and technology constraints to a logical design. Physical design can be likened to the third stage of designing a house. After the basic architectural plan is complete, the plans for wiring, plumbing, heating, and ventilation — the internals of the house — are created for the contractors. This module does not address user-interface design or data-store design. The user-interface design is presented in Module 11: Designing the Presentation Layer, and the data-store design is covered in a separate course, Course 1609: Designing Data Services and Data Modeling. Slide Objective To explain physical design, its purpose, and its output. Lead-in Physical design is the process of describing components, services, and technologies of the solution from the perspective of the development team. Note Module 6: Beginning Physical Design 183 Module 6: Beginning Physical Design 183 Goals of Physical Design " Transform the logical design into a set of component candidates " Provide a baseline for evaluating implementation design opportunities " Determine the implementation technologies and strategies " Create a structural view of the solution from the development team’s perspective " Articulate the solution design at the level of detail required for development Physical design uses the outputs of logical design to produce a component specification for the proposed solution. This specification describes the application from the development team’s perspective and will be used by the development team to create the actual components for the application. Physical design also provides a baseline that leads to the development of the application. This baseline provides opportunities for developing prototypes and beginning the Developing Phase of the MSF Design Process. During physical design, the project team will evaluate candidate technologies to determine the technologies that should be used to develop the solution. Physical design should describe the solution in sufficient detail so that the development team can create the application that the design describes. The physical design phase leads to the functional specification, which is the primary source of information for the development team. Slide Objective To describe some of the goals of the physical design phase. 184 Module 6: Beginning Physical Design 184 Module 6: Beginning Physical Design Perspective of Physical Design The physical design perspective is from the point of view of the developers Conceptual Logical Physical Business Solution The physical design is from the perspective of the development team. This perspective allows the design to begin to take a form that a development team can use to create the solution by using specific technologies. In this sense, physical design looks at the design from a more technical viewpoint. Basically, physical design provides a bridge between logical design and implementation. Slide Objective To explain the perspective that should be used during the physical design phase. Lead-in Whereas logical design viewed the problem from the perspective of the project team, physical design views the problem from the perspective of the development team. Module 6: Beginning Physical Design 185 Module 6: Beginning Physical Design 185 Perspective Captured in Component Specifications " Describes the solution at a greater level of detail " Defines the internal structure of the components " Applies physical constraints to the solution " Provides: $ A bridge between logical design and implementation $ Implementation clarity for the developers $ Simplified work estimation and segmentation Because physical design is from the development team's perspective, this perspective is captured in a format that is most useful to a developer — that of a component specification. The component specification contains the level of detail that developers require to begin building the components of the business solution. The component specification defines how those components should be built and determines what technologies and constraints are applicable to the development. The component specification provides the transition from the logical design and its models to the actual implementation. It clearly states what must be built, how much effort it should take, and how the development effort should be divided. Slide Objective To introduce component specifications and their use during physical design. Lead-in Physical design involves reaching a level of detail that is appropriate for implementation. Component specifications are one part of this process, because they define how the individual components are to be developed. 186 Module 6: Beginning Physical Design 186 Module 6: Beginning Physical Design Clarifying Physical Design Physical design is not Coding Technology deployment But it enables you to Create detailed component specifications for development Determine where the components should reside Choose technologies During the physical design phase, the project team produces component specifications and deployment topologies that the development team will use to create the solution. It is important to realize that this phase is still part of designing the solution and not developing the deployable release. Slide Objective To further explain the physical design phase by giving examples of what physical design is and is not. Lead-in To further clarify what physical design entails, let us look at some examples of what it is and is not. [...]... solution 190 190 Module 6: Beginning Physical Design Module 6: Beginning Physical Design Physical Design and the MSF Process Model Slide Objective Vision Approved To explain where the physical design phase takes place in the overall MSF Design Process Project Plan Approved Conceptual Design Logical Design Physical Design Baseline Physical design begins before the team baselines logical design and baselines... doing physical design After completing this activity, you will be able to: " Articulate the value of doing physical design and the risks of not doing physical design Module 6: Beginning Physical Design ! Physical Design Process Module 6: Beginning Physical Design 189 189 Slide Objective To provide an overview of the topics and activities in this section " Physical Design and the MSF Process Model " Physical. . .Module 6: Beginning Physical Design Module 6: Beginning Physical Design 187 187 Value of Physical Design Slide Objective To describe the value that the physical design phase brings to the overall MSF Design Process Lead-in The physical design phase brings great value to the overall design in many ways, including the following " Evaluates implementation options " Provides a flexible design that... your desired solution 210 210 Module 6: Beginning Physical Design Module 6: Beginning Physical Design Review Questions Slide Objective To reinforce module objectives by reviewing key points " Explain the need for physical design in the process of designing a business solution " Describe the role of physical design in the MSF Design Process " Describe the steps of physical design " Create a preliminary... Brainstorm solutions Module 6: Beginning Physical Design Module 6: Beginning Physical Design 211 211 Looking Forward Slide Objective To provide a context in which students can frame what they have just learned and foreshadow what they will be learning Module 12: Introduction to Functional Specifications Module 11: Designing the Presentation Layer Module 10: Completing Physical Design Module 9: Designing Solutions... Microsoft Technologies Module 1: Course Overview Designing Business Solutions Module 8: Solution Design and the Component Object Model Module 7: Selecting Solution Technologies Module 2: Solution Design Using the MSF Module 3: A Services-Based Approach to Solution Design Module 4: Business Solution Conceptual Design Module 5: Business Solution Logical Design Module 6: Beginning Physical Design You have learned... design phase Module 6: Beginning Physical Design Module 6: Beginning Physical Design Physical Design Steps Slide Objective To explain the separate steps in the physical design phase: research, analysis, rationalization, and specification Physical Design Lead-in Research Baseline Analysis Rationalization Baseline Rationalization Specification Baseline Specification Baseline Physical design has four distinct... component interfaces, attributes, and services The specification baseline leads into the baseline of the physical design 191 191 192 192 Module 6: Beginning Physical Design Module 6: Beginning Physical Design Deliverables of Physical Design Slide Objective To introduce the final outputs that a physical design should produce Baseline deployment model, comprising network, data, and component topologies "... section In this section Module 6: Beginning Physical Design Module 6: Beginning Physical Design 209 209 Guidelines Slide Objective To present some general guidelines related to the information in this module " Plan for possible stumbling blocks; ensure that the physical design is flexible enough to handle changes " Fight obsolescence: Good design research is a necessity for a design that will stand... steps of physical design — research and analysis You will continue the analysis step in greater detail by learning about the criteria to use when selecting candidate technologies for your solution You will then learn how to apply those criteria to Microsoft technologies You will continue with physical design in Module 10 212 212 Module 6: Beginning Physical Design Module 6: Beginning Physical Design . 6: Beginning Physical Design Module 6: Beginning Physical Design 179 Module 6: Beginning Physical Design 179 ! !! ! Overview In this module. of the physical design phase. 184 Module 6: Beginning Physical Design 184 Module 6: Beginning Physical Design Perspective of Physical Design