1. For software vendors to provide software maintenance of the South China region and services.

2. Hence, performance optimalization in software maintenance phase takes important part in all software lifecycle.

3. These works refer to the contents of software maintenance models, program viewing, program database, hypertext, program high-level abstraction, and decompiler.

4. System operation and maintenance, software maintenance and expounded on the importance of testing.

5. Because of all kinds of varying factors in software maintenance phase, the performance of application software becomes gradually unsatisfactoried to users.

5. is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

6. In software lifecycle, BOSC figures structure of software product of CBD, supports software maintenance and update.

7. Three methods of applying network copy program to software system's fast installation and recovery of LAN computer lab to improve software maintenance efficiency are introduced.

8. The concept of relative program variables is given and the algorithm for finding out the relative variables in program is presented, thus adding a little new content to the software maintenance.

9. Quantization of software maintainability and ripple effect tracing are two critical issues in the field of software maintenance engineering.

10. So it is meaningful to study the metrics and the management of software maintainability. This thesis analysed and studied the maintenance activities in software maintenance process.

11. Accurate cost and schedule estimgations are the necessary steps to ensure normal software maintenance.

12. Corporations apply Management Information System ( MIS ) whose requirements are network, hardware and software maintenance.

13. Aiming directly at the deficiency of available editors on searching or replacing the appellative symbols and multi-lines, we propose a method to develop a tool used for software maintenance.

14. The software system has zonal programme design and modularization, which reduces the software maintenance cost.