织梦DedeCMS数据库的信息是写在data/common.inc.php文件中的，而织梦在连接数据库时使用的有一个函数是：
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function Init($pconnect=FALSE) {
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$this->linkID = 0;
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$this->dbHost = $GLOBALS['cfg_dbhost'];
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$this->dbUser = $GLOBALS['cfg_dbuser'];
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$this->dbPwd = $GLOBALS['cfg_dbpwd'];
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$this->dbName = $GLOBALS['cfg_dbname'];
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$this->dbPrefix = $GLOBALS['cfg_dbprefix'];
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$this->result["me"] = 0;
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$this->Open($pconnect);
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}