aboutMongo.txt

In mongo the "tables" (it are not tables since it is nosql) are called COLLECTIONS. The objects inside those collections are DOCUMENTS

- mongod >> execute mongo (it is not installed as a service in this pc)
- show dbs >> shows databases
- to switch to a db > db use
- db >> returns db name

INSERT DOCUMENTS & CREATE COLLECTIONS
- to create a collection simply use db.createCollection("collection-name") >> db.createCollection("users");
  OR use db.[collection-name].insert({json object})
- to erase a collection use db.[collection-name].drop()
to show documents in a collection > db.[collection-name].find() || db.[collection-name].find().pretty()
Documents in the same collection can have different attributes, this is a big difference with sql databases

TO FIND A DOCUMENT:
- db.[collection-name].find >> shows the hole collection
- db.products.find({"tags": "computers"}) >> find inside collection al the products with tags == computer
- db.products.find({"tags": "computers", "description": "lg monitor"}) >> multiple criteria to search
findOne method is also available for example

UPDATE A DOCUMENT:
https://docs.mongodb.com/manual/tutorial/update-documents/

JSON that can be inserted example:
{
  "name": "Pedro",
  "age": 18,
  "active": false,
  "created_at": new Date("12/12/1999"),
  "facturer": {
    "name": "dell",
    "version": "xps",
    "location": {
      "city": "usa",
      "address": "illinois"
    }
  }
}

once a document is inserted, it is converted from json to b(inary)son, to do searchs faster