把程序按内容或过程（函数）关系分成段，每段有自己的名字。一个用户作业或进程所包含的段对应于一个二维线形虚拟空间，也就是一个二维虚拟存储器。段式管理程序以段为单位分配内存，然后通过地址映射机构把段式虚拟地址转换成实际的内存物理地址。-The program is seperated to sections by content or progress(function),every section has its name.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001177s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.085349s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001345s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001883s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001143s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003654s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001039s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003392s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015008s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001315s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 299977 [ RunTime:0.001413s ]
