Scientific Computing & Data Science

Written by cinema4dUpdate items using "$set" modifier : "$set" modifier adds item(s) if the relevant key exists or creates the key when absent. Type the following for data preparation: // drop the current database db.dropDatabase() // define webpage1 var user1 = {"username" : "gchoi", "age" : 37, "sex" : "male"} // insert items into DB db.users.insert(user1) db.users.find() Result: > db.users.fi..

Written by cinema4d다음 코드는 MongoDB에 대한 라이프 사이클의 한 예를 보여주고 있다: // user DB "foobar" use foobar // define user1 var user1 = {"username" : "gchoi"} user1.relationships = {"friends" : 100, "enemies" : 1} // define user2 var user2 = {"username" : "tjkwak"} user2.relationships = {"friends" : 50, "enemies" : 5} // define user3 var user3 = {"username" : "jmpark"} user3.relationships = {"friends" : 10, "en..

Written by cinema4dMongoDB 서버가 실행된 상태에서 (./mongod) Terminal을 하나 더 실행한 후 MongoDB의 path로 이동하여 다음과 같이 입력한다../mongo MongoDB shell version: 2.4.8 connecting to: test Welcome to the MongoDB shell. For interactive help, type "help". For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com/group/mongodb-user Server has startup warnings:..

Written by cinema4dMac에서 Terminal을 실행하여 MongoDB가 설치된 곳으로 path 이동한다.cd [root_path]/mongodb-osx-x86_64-2.4.8/bin다음과 같이 입력해 본다. (Windows에서는 "mongod.exe"를 실행한다)./mongod ./mongod --help for help and startup options Mon Jan 13 22:52:41.258 [initandlisten] MongoDB starting : pid=674 port=27017 dbpath=/data/db/ 64-bit host=Geol-ui-MacBook-Pro.local Mon Jan 13 22:52:41.259 [initandlisten] Mon Jan 13 22:5..