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Sof_Main_Evol_5_p3
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Sof_Main_Evol_5_p3 Description: Sof_Main_Evol_5_p3 Author: Sof_Main_Evol_5_p3 Other tests from this author Creation Date: 15/01/2024 Category: Others Number of questions: 23 |
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Migration Planning The activity of planning for migration comprises thirteen steps:
Step 1: Perform portfolio analysis.
Step 2: Identify the stakeholders.
Step 3: Understand the requirements.
Step 4: Create a business case.
Step 5: Make a go or no-go decision. Step 6: Understand the LIS.
Step 7: Understand the target technology.
Step 8: Evaluate the available technologies. Step 9: Define the target architecture.
Step 10: Define a strategy.
Step 11: Reconcile the strategy with the needs of the stakeholder.
Step 12: Determine the resources required.
Step 13: Evaluate the feasibility of the strategy.
عارف مش عارف . Step _: ________________ . establishes measures of technical quality and ____________ for a set of software systems. It is represented on a chi square chart value need not be replaced, migrated, or restructured. عارف مش عارف . Step _: _________________. Requirements are a description of the needs and desires of stakeholders that a system is expected to implement: There are two challenges in defining requirements. First, ensure that the __ requirements are captured. Second, express the requirements in such a way that the stakeholders can easily _________ their correctness. Therefore, it is essential to have an unambiguous representation of the requirements and have it made available in a centralized database so that all the stakeholders can review and validate the requirements. Requirements can come from: ___________ ___________ ___________ عارف مش عارف . Step 4: ___________________ . Based on a business case, executive management can decide whether or not the migration project will increase quality, reduce maintenance costs, and be financially viable. In general, a good business case provides the following information about the migration project: ___________; ___________; ___________; and ___________. عارف مش عارف . Step _: ________________. Once a business case has been defined, it is reviewed by the stakeholders to reach an agreement. If the business case is unsatisfactory then the legacy migration project is terminated at this step. عارف مش عارف . Step __: __________. Understanding the LIS is essential to the success of any migration project. Techniques available to meet this challenge include __________ and ___________. عارف مش عارف . Step 7: ________________. This activity can proceed in ____ with the activity of Step 6 (Understand the LIS). It is important to understand the technologies that can be used in the migration effort and the technologies that have been used in the legacy system. In general, four types of technologies are of interest in the migration effort: 1. __________, including COBOL, Java, eXtensible Markup Language (XML), and modern DBMS. 2. __________, including distributed communication and transaction technologies such as remote procedure calls (RPC) or message queues. 3. __________ and standards that may be used to develop an information system, including message-oriented middleware (MOM), XML Messaging, Java 2 Enterprise Edition (J2EE), and Enterprise JavaBeans (EJB). 4. __________ that are available to assist in migration of the LIS to the new information system. عارف مش عارف . Step _: ________________. One must compare and contrast all the available technologies to evaluate their capabilities. If the capabilities _______, then we must appraise these technologies to understand the ________ of service they will provide in the migration process. To formulate the eventual architecture and design of the system, those ______ are performed. عارف مش عارف . Step 2: __________________. Stakeholders are the people or organizations that influence a system’s behavior, or those who are impacted by the system. Stakeholders typically include ______, ______, ______, ______, customers, and end users. The stakeholders ultimately judge the outcome and impact of the migration project. Each of the stakeholders bring their own _______________ to the table. Therefore, it is necessary to obtain their agreement and support عارف مش عارف . Step 9: _______________________ The target architecture is the desired architecture of the new system. It models the stakeholders’ vision of the new system. This usually requires descriptions using _______ views with different levels of _________. The target architecture is likely to evolve during the ____________. Therefore, the target architecture is continually____________ and _______ during the migration process. عارف مش عارف . Step __: _________. A strategy defines the overall process of transforming the LIS to the new system. This includes ____________, that is schema conversion, data conversion, and program conversion, testing, and cut over. For a mission-critical legacy system, deploying the new system all at once is a risky procedure, therefore a legacy system is evolved _______ to the new system. During the migration effort, many things can change: _______ may change, additional knowledge about the system may be acquired, and _______ may change. Those changes must be accommodated by the migration effort. While accommodating those changes, a migration strategy need to _______ risk, _______ development and deployment costs, support an aggressive but reliable schedule, and meet _________________ . عارف مش عارف . Step ___: ______________________________. A consensus needs to be developed among stakeholders before implementing the migration plan. The migration strategy developed in the previous step must be reconciled with stakeholder needs. Therefore, this step includes briefing the stakeholders about the ____, reviewing the target architecture, and the ____. The entire group evaluates the strategy and __________________________. عارف مش عارف . Step __: ____________________________. We estimate the resource need including cost of implementing the project. One can use the widely used cost estimation model called _____________________________ COCOMO II addresses _______________ models, reengineering work, and reuse-driven approach. The COCOMO II model provides estimates of ____, schedule by ____, and staffing by phases and activities. عارف مش عارف . Step __: ___________________________. After executing the first 12 steps, the management should have an understanding of the ____________, the available technology options, a target architecture, migration strategy, cost of migration, and a schedule to effect migration. Based on available information, management determines whether or not the migration strategy is feasible. If the strategy is found to be viable, the migration plan is finalized. On the other hand, if it is unacceptable, a detailed report is produced. Based on the reasons stated in the report, one may revise the migration strategy until: (i) a __________________, or (ii) the migration strategy is determined to be infeasible and the project is ___________. عارف مش عارف . Cold turkey (_______ approach) عارف مش عارف . Database first (__________________) عارف مش عارف . Database last (_________________): عارف مش عارف . Chicken little (refines_______________________________): عارف مش عارف . Butterfly (The Butterfly methodology): عارف مش عارف . Iterative (The iterative method ______________________________): عارف مش عارف . Migration Methods: قولهم عارف مش عارف . Composite database (__ decomposable, semi decomposable, and __ decomposable legacy information systems): عارف مش عارف . Iterative Each Component may be in one of the following states during the reengineering process: ___: This state means that the component has not been reengineered, which implies that it continues to be a legacy component. ____: The structure of the component remains the same and it performs the same functions, but the component accesses data through the new Data Banker. ___: The component has already been modified, and a desired level of quality has been achieved. ___: The component was not part of the legacy system and has been newly added in order to introduce new functions. عارف مش عارف. |
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