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Author: GoesToEleven

046_mongodb/02_db/README.md

@@ -50,6 +50,10 @@ db.<collection name>.find()
 ```
 
 example
+```
+db.cats.insert({"firstname":"coco"})
+```
+
 ```
 db.cats.find().pretty()
 ```

046_mongodb/04_document/README.md

@@ -63,7 +63,7 @@ db.crayonColors.insert([
                     }
                 ])
 ```
-[source](https://gist.githubusercontent.com/jjdelc/1868136/raw/c9160b1e60bd8c10c03dbd1a61b704a8e977c46b/crayola.json)
+[source of crayon json](https://gist.githubusercontent.com/jjdelc/1868136/raw/c9160b1e60bd8c10c03dbd1a61b704a8e977c46b/crayola.json)
 
 ```
 show collections

046_mongodb/README.md

@@ -2,152 +2,117 @@
 
 ## 02_db
 
-### create
+#### create
+
 ```
 use <db name>
 ```
+The above will use the database of the provided name if it exists, and create it if it doesn't
+
+#### use
 
-### use 
 ```
 use <db name>
 ```
 
-### see current db
+#### example
+```
+use temp
+```
+
+The above will use the database of the provided name if it exists, and create it if it doesn't
+
+#### see current db
+
 ```
 db
 ```
 
-### see all db
+#### see all db
+
 ```
 show dbs
 ```
+You need to have at least one document in a db for it to be seen.
+
+#### insert document
 
-### insert document
 ```
 db.<collection name>.insert({"name":"McLeod"})
 ```
-If the collection doesn't exist, it is created
 
-### view collections
+example
 ```
-show collections
+db.dogs.insert({"name":"toby"})
 ```
 
-### view documents
+#### view documents
 ```
 db.<collection name>.find()
 ```
 
-### drop db
+example
+```
+db.cats.insert({"firstname":"coco"})
+```
+
+```
+db.cats.find().pretty()
+```
+
+#### view collections
+```
+show collections
+```
+
+#### drop db
 ```
 db.dropDatabase()
 ```
 
 ## 03_collection
 
-### create implicitly
+# collection commands
+
+#### create implicitly
 ```
 db.<collection name>.insert({"name":"McLeod"})
 ```
 
-### create explicitly
+#### create explicitly
 ```
-db.createCollection(<name>, <optional options>)
+db.createCollection(<name>, {<optional options>})
 ```
 
 #### optional options
 | option | type | description |
 | --- | --- | --- |
-| autoindex | bool | creates _id index automatically |
 | capped | bool | caps the size |
 | size | number | sets size of cap in bytes |
 | max | bool | maximum number of documents allowed in capped collection |
 
+[other options including validation](https://docs.mongodb.com/manual/reference/method/db.createCollection/)
+
 #### examples
 ```
 db.createCollection("customers")
 ```
 
 ```
-db.createCollection("customers",{autoindex:true})
-```
-
-```
-db.createCollection("customers",{autoindex:true, capped:true,size:65536,max:1000000})
+db.createCollection("crs",{capped:true, size:65536,max:1000000})
 ```
 
-### view collections
+#### view collections
 ```
 show collections
 ```
 
-### drop
+#### drop
 ```
 db.<collection name>.drop()
-
 ```
 
 ## 04_document
 
-### insert
-```
-db.<collection name>.insert({document})
-```
-
-### insert multiple
-```
-db.<collection name>.insert(< [{document}, {document}, ..., {document}] >)
-```
-pass in an array of documents
 
 ## 05_query
-
-### find
-```
-db.<collection name>.find()
-```
-
-### find one
-```
-db.<collection name>.findOne()
-```
-
-### pretty
-```
-db.<collection name>.find().pretty()
-```
-pretty prints the results
-
-### operators
-
-| operator | syntax | example |
-| --- | --- | --- |
-| equality | {key:value} | db.customers.find({"name":"McLeod"}).pretty() | 
-| less than | {key:{$lt:value}} | db.customers.find({"age":{$lt:20}}).pretty() | 
-| less than equals | {key:{$lte:value}} | db.customers.find({"age":{$lte:20}}).pretty() | 
-| greater than | {key:{$gt:value}} | db.customers.find({"age":{$gt:20}}).pretty() | 
-| greater than equals | {key:{$gte:value}} | db.customers.find({"age":{$gte:20}}).pretty() | 
-| not equals | {key:{$ne:value}} | db.customers.find({"age":{$ne:20}}).pretty() | 
-
-### and
-```
-db.customers.find({$and: [{"name":"McLeod"}, {"age":20}]}).pretty()
-db.customers.find({$and: [{"name":"McLeod"}, {"age":{$lt:20}}]}).pretty()
-db.customers.find({$and: [{"name":"McLeod"}, {"age":{$gt:20}}]}).pretty()
-```
-
-### or
-```
-db.customers.find({$or: [{"name":"McLeod"}, {"age":20}]}).pretty()
-db.customers.find({$or: [{"name":"McLeod"}, {"age":{$lt:20}}]}).pretty()
-db.customers.find({$or: [{"name":"McLeod"}, {"age":{$gt:20}}]}).pretty()
-```
-
-### and or
-```
-db.customers.find({"role":"owner", $or: [{"name":"McLeod"}, {"age":20}]}).pretty()
-db.customers.find({"role":"owner", $or: [{"name":"McLeod"}, {"age":{$lt:20}}]}).pretty()
-db.customers.find({"role":"owner", $or: [{"name":"McLeod"}, {"age":{$gt:20}}]}).pretty()
-```
-WHERE role = 'owner' AND (name = 'mcleod' OR age = 20)
-