**

第5关：综合实训——学生信息管理

**

命令行
mongo
use Testdb5
document=([{_id:1,name:“王晓丽”,age:19,sex:“女”,major:“计算机”},
{_id:2,name:“张明”,age:21,sex:“男”,major:“计算机”},
{_id:3,name:“秋雅”,age:20,sex:“女”,major:“播音主持”},
{_id:4,name:“张欣欣”,age:18,sex:“女”,major:“计算机”},
{_id:5,name:“袁华”,age:20,sex:“男”,major:“播音主持”},
{_id:6,name:“马冬梅”,age:20,sex:“女”,major:“表演”},
{_id:7,name:“夏洛”,age:22,sex:“男”,major:“表演”},
{_id:8,name:“李大春”,age:23,sex:“男”,major:“表演”}]);

db.student_t.insert(document);

代码行
echo "
db.student_t.save({‘_id’:4,‘name’:‘张欣欣’,‘age’:18,‘sex’:‘女’,‘major’:‘播音主持’});
db.student_t.find({‘age’:{$gte:20}});
db.student_t.find({‘sex’:‘男’});
db.student_t.find({‘major’:‘播音主持’});
db.student_t.find({‘major’:‘表演’,‘sex’:‘女’});
db.student_t.find({‘_id’:5});
db.student_t.find({‘name’:‘王晓丽’});
"