定制开发模式通常采取模拟现有的管理模.式和业务流程的方法，一般情况下，

The custom development model usually adopts the method of simulating the existing management model and business process. Under normal circumstances, it will not change the current management and operation, or there are few changes, so the implementation is relatively difficult. However, the customization model involves too many elements and links, which are not only related to the business management and business process of the enterprise, but also have a great relationship with the technical level and strength of the application service provider. More uncertain factors will lead to the entire project. The risk is greater. The custom development model has more links than the purchase model, which inevitably leads to a longer development and application cycle of the entire system. The key elements of the customized development model are requirements and system analysis, including overall system analysis and system analysis of each sub-system. <br>(1) Purchasing mode <br>Purchasing mode, through the practicality of commercialized software, and the combination and reconstruction of existing modules of the software system, you can estimate its actual use effect, that is, through the software simulation before the actual business process adjustment The preliminary adjustment process is more practical and convenient. The application success rate of the purchase model depends on the commercial software system purchased. According to statistical data and application analysis, the application success rate of small software systems, such as financial management systems and human resource management systems, is higher than 90%, and may even be possible. Will be completely successful, and large software systems, because of their complexity, have a slightly lower probability of successful application, about 70% -80%

Custom development models usually take the method of simulating existing management models and business processes, and in general, do not change the current management, or there are fewer places to change, so implementation is relatively small. However, the customization model involves too many elements, links, not only with the management and business processes of enterprises, and application service providers of technical standards and strength is also very large correlation, more uncertainties will lead to the risk of the entire project. The custom development mode has more links than the purchase mode, which will inevitably lead to the long development and application cycle of the whole system. The key factors in the custom development model are requirements and system analysis, including overall system analysis and system analysis of individual sub-systems.<br>(1) Purchase mode<br>The purchase mode, through the practical ization of the commercial software, as well as the combination and reconstruction of the existing modules of the software system, can be estimated its actual use effect, that is, before the actual business process adjustment, through the software simulation adjustment process for preliminary verification, more practical and convenient. The application success rate of the purchase model depends on the commercialized software system purchased, according to statistics and application analysis, small software systems, such as financial management system, human resources management system, etc., the application success rate is higher than 90%, and may even be completely successful, while large software systems, because of the complexity, the probability of application success is slightly lower, about 70%-80%

The customized development mode usually adopts the method of simulating the existing management mode and business process. Generally, it will not change the current operation management, or there are few places to change, so the implementation difficulty is relatively small. However, the customization mode involves too many elements and links, which are not only related to the business management and business process of the enterprise, but also to the technical level and strength of the application service provider. Many uncertain factors will lead to the greater risk of the whole project. Customized development mode has more links than purchase mode, which inevitably leads to a long development and application cycle of the whole system. The key factors of customization development mode are demand and system analysis, including the overall system analysis and the system analysis of each subsystem.<br>(1) Purchase mode<br>Purchase mode, through the practical use of commercialized software, as well as the combination and reconstruction of existing modules of the software system, can predict its actual use effect, that is, before the actual business process is adjusted, it is more practical and convenient to conduct preliminary verification through the process of software simulation adjustment. The application success rate of purchase mode depends on the purchased commercialized software system. According to the statistical data and application analysis, the application success rate of small software system, such as financial management system and human resource management system, is higher than 90%, and may even be completely successful. However, the application success rate of large software system is slightly lower, about 70% - 80%, because of its complexity<br>