Znn3bq.jpeg
²é¿´: 237  |  »Ø¸´: 2
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

dayv

ľ³æ (СÓÐÃûÆø)

[½»Á÷] Èí¼þά»¤ÓëÈí¼þÑÝ»¯µÄ²î±ð

The word "maintenance" suggests fixing parts that are broken and replacing parts that wear out. Software is not subject to wear in the sense that mechanical systems are, so it can never wear out; therefore maintenance would appear to mean simply fixing faults in the original implementation. This ignores the problems of rapidly changing environments and requirements: An aircraft engineer would not consider upgrading a Cessna light aircraft to a supersonic jet airliner to be a "maintenance task"(!). Yet there are many software systems that have had to undergo similarly dramatic enhancements.
These considerations suggest that the word "maintenance" should be replaced by "reengineering" or "evolution."
ά»¤Ö¸µÄÊÇÐÞ²¹Ë𻷵IJ¿·ÖºÍÌæ»»Ä¥ËðµÄ²¿·Ö£¬Èí¼þ²¢²»Ïó»úеϵͳÄÇÑù»áÄ¥Ëð£¬ËýÓÀÔ¶²»»áËð»·£¬ËùÒÔά»¤ÖªÊ¶ÔÚԭʼʵÏÖÖмòµ¥µØÐÞ²¹´íÎó¡£ÕâºöÂÔÁË¿ìËٱ仯µÄ»·¾³ºÍÐèÇóÎÊÌ⣺·É»ú¹¤³Ìʦ²¢²»»á½«·É»úµÄ·¢¶¯»úµÄÉý¼¶¿´×÷¡°Î¬»¤ÈÎÎñ¡±£¬¶øÐí¶àÈí¼þϵͳ²»µÃ²»×÷ÀàËÆµÄÌáÉý£¬´ÓÕâ¸öÒâÒåÉÏά»¤µÄº¬ÒåÓ¦¸Ã±»Ì滻Ϊ¡°ÔÙ¹¤³Ì¡±»ò¡°ÑÝ»¯¡±¡£

[ Last edited by »ÃÓ°ÎÞºÛ on 2006-10-3 at 13:48 ]
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yuefour

½ð³æ (ÕýʽдÊÖ)

1

2222222222
2Â¥2005-06-11 10:06:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wang587111

½ð³æ (ÕýʽдÊÖ)

3Â¥2007-03-07 14:21:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ dayv µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁϸ´ÊÔÇóµ÷¼Á +22 xhhdjdjsjks 2026-04-09 22/1100 2026-04-13 12:18 by À¶ÔÆË¼Óê
[¿¼ÑÐ] һ־Ը³¶«´óѧ071000ÉúÎïѧѧ˶³õÊÔ·ÖÊý276Çóµ÷¼Á +7 Ľ¾øcc 2026-04-09 7/350 2026-04-13 12:01 by zhshch
[¿¼ÑÐ] ¿¼ÑÐÓ¢Ò»ÊýÒ»338·Ö +6 ³¤½­´óѧ¶«Ð£Çø 2026-04-13 7/350 2026-04-13 09:40 by fqwang
[¿¼ÑÐ] 277Çóµ÷¼Á +23 Äß½¨Éè 2026-04-06 23/1150 2026-04-13 00:40 by Íõͯ×ÓÁú
[¿¼ÑÐ] 2±¾£¬³õÊÔ303£¬0860Çóµ÷¼Á +6 floriea 2026-04-12 8/400 2026-04-12 18:13 by zhouxiaoyu
[¿¼ÑÐ] Ò»Ö¾Ô¸2110£¬»¯Ñ§Ñ§Ë¶310·Ö£¬±¾¿ÆÖصãË«·ÇÇóµ÷¼Á +19 ŬÁ¦·Ü¶·112 2026-04-08 19/950 2026-04-12 17:01 by lhj2009
[¿¼ÑÐ] 0854µ÷¼Á +12 ³¤¹­°Á 2026-04-09 13/650 2026-04-12 09:56 by ÄæË®³Ë·ç
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷±±¹¤Òµ´óѧ289 085602 +33 yangæÃ 2026-04-10 34/1700 2026-04-12 08:11 by Art1977
[¿¼ÑÐ] 085404 293Çóµ÷¼Á +9 ÓÂÔ¶¿â°®314 2026-04-08 9/450 2026-04-12 02:24 by Çï¶¹²ËÑ¿
[¿¼ÑÐ] 0854µ÷¼Á +5 ÒôÏñµêÌý»¨¹ÄÏ· 2026-04-10 5/250 2026-04-11 10:49 by qingpingzhu
[¿¼ÑÐ] 346£¬¹¤¿Æ0854Çóµ÷¼Á£¬×¨Ë¶ +7 moser233 2026-04-10 8/400 2026-04-11 08:52 by Öí»á·É
[¿¼ÑÐ] ÉúÎïѧ308Çóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +6 ÏàÐűػá¹ââÍòÕ 2026-04-10 6/300 2026-04-11 05:23 by zhuwenxu
[¿¼ÑÐ] µ÷¼Á »¯Ñ§ 307 +21 73372112 2026-04-09 23/1150 2026-04-10 23:53 by wj165256
[¿¼ÑÐ] ±¾¿ÆÎ÷¹¤´ó 324Çóµ÷¼Á +4 wysyjs25 2026-04-10 4/200 2026-04-10 20:00 by À´¿´Á÷ÐÇÓê10
[¿¼ÑÐ] Ò»Ö¾Ô¸¿ó´ó£¬²ÄÁϹ¤³Ìר˶314·Ö£¬0856¿Éµ÷¶¼¿ÉÒÔ +15 ÎÞи¿É»÷µÄ¾ÞÈË 2026-04-09 15/750 2026-04-10 18:10 by hmn_wj
[¿¼ÑÐ] ±¾9 Ò»Ö¾Ô¸Î÷¹¤´ó085601 324Çóµ÷¼Á +5 wysyjs25 2026-04-10 5/250 2026-04-10 16:57 by luoyongfeng
[¿¼ÑÐ] ³õÊÔ·Ö332£¬Ò»Ö¾Ô¸±¨¿¼Î÷±±¹¤Òµ´óѧ£¬ +11 ¹ÊÈË?? 2026-04-09 11/550 2026-04-09 21:54 by JineShine
[¿¼ÑÐ] 348Çóµ÷¼Á +3 candyyyi 2026-04-09 3/150 2026-04-09 17:20 by ¶ÎΰÑÞ
[¿¼ÑÐ] 328Çóµ÷¼Á +17 lftmya 2026-04-07 18/900 2026-04-09 08:05 by 5268321
[¿¼ÑÐ] ÉúÎïѧ328·ÖÇóµ÷¼Á +9 ÉÁµçkkl 2026-04-08 10/500 2026-04-08 21:42 by liuhuiying09
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û