Mongo db Install

💥 How to install Mongodb

      💢 Start MongoDB

                     👀 sudo service mongodb start

       💢 Stop MongoDB

                    👀 sudo service mongodb stop

          💢 Restart MongoDB

                     👀 sudo service mongodb restart

  💥 To use MongoDB run the following command.

                       👀 mongo

  💥How to create database

            💧If you want to create a database with name <mydb>, then use database statement would be as follows 

>use mydb
switched to db mydb

           💧To check your currently selected database, use the command db

>db
mydb

            💧If you want to check your databases list, use the command show dbs.

>show dbs
local     0.78125GB
test      0.23012GB

           💧Your created database (mydb) is not present in list. To display database, you need to insert at least one document into it.

>db.student.insert({"name":"Abi"})
>show dbs
local      0.78125GB
mydb       0.23012GB
test       0.23012GB

  💥 How to drop Database

Basic syntax of dropDatabase() command is as follows −
💥db.dropDatabase() 

          💧This will delete the selected database. If you have not selected any database, then it will delete default 'test' database.


     👉First, check the list of available databases by using the command, show dbs.

      💧>show dbs
 local 0.78125GB 
mydb 0.23012GB 
 test 0.23012GB 
 
      👉If you want to delete new database <mydb>, then dropDatabase() command would be as follows 

    💧>use mydb switched to db mydb  
     > db.dropDatabase() 
     >{ "dropped" : "mydb", "ok" : 1 } >
 
       👉Now check list of databases.

>show dbs 
 local 0.78125GB 
test 0.23012GB >