chhavi48

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chhavi48

Terminology
Database A container for collections. This is the same as a database in SQL and 
usually each project will have its own database full of different collections.
Collection
A grouping of documents inside of a database. This is the same as a table in 
SQL and usually each type of data (users, posts, products) will have its own 
collection.
Document
A record inside of a collection. This is the same as a row in SQL and usually 

chhavi48

Assignment 2

1.db.assign1.find({"age": { $in: [40]}}).pretty()


2. db.assign1.find({ $all: [{"gender": "Female"}, {"age": {$gte: 20, $lte: 30}}]}).pretty()


3. db.assign1.find({ $and: [{"gender": "Female"}, {"age": {$gte: 20, $lte: 30}}]}).pretty()

chhavi48

1. Database Commands
 a.View all databases
   show dbs

 b.Create a new or switch databases 
  use dbName

 c.View current Database
  db