The life cycle of a system built with Application Server consists of the following steps:
- Investigating system specifications (functions)
- System design and operation design
- Developing an application
- Building a system
- Regular operations and maintenance of the system
- Rechecking the operations and maintaining the application
The following figure shows the life cycle of a system in the development environment and execution environment of an application.
Figure 4-3 Life cycle of a system
The explanation of each step is as follows:
- Investigating system specifications (functions)
Investigate and determine the functions of Application Server to be used, depending on the system objectives and business contents.
- System design and operation design
Design the system configuration and the operation method depending on the system objectives, the business to be executed, and the method of using the system.
- Developing an application
Develop an application that fulfills the business requirements, based on the application design information investigated in steps 1 and 2 above.
- Building a system
Build a system based on the system design information investigated in steps 1 and 2 above. In addition to this, install the application developed in step 3 in the system.
- Regular operations and maintenance of the system
Execute the application and start the system operations. In system operations, repeat the routine operations and the regular system maintenance.
- Rechecking the operations and maintaining the application
Recheck the operation method as needed, depending on the changes in the business contents, or the changes in the system size. Perform the application maintenance, as and when required.
The life cycle continues until the system is updated or discarded.
- Organization of this section
- 4.2.1 Investigating the system specifications (functions)
- 4.2.2 System design and Operation design
- 4.2.3 Developing an application
- 4.2.4 Building a system
- 4.2.5 System operations and maintenance
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