1. MONGO DB Introduction
• Two key Entity
• Collection
• Document

2. MONGO DB Vs Traditional
• Overview with Traditional System
RDBMS MONGO
ROW DOCUMENT
TABLE COLLECTION
COLUMN PROPERTY
One –Many Mapoping Enbbeded-document’s

3. Collection Introduction
• Collection can be though as a table in
RDBMS
• Mongo DB refer collection as
•group of document

4. Collection Introduction (Contd…)
• Schema Free
• Can store :-
– {“fName" : “Anish!"}
– {“Age" : 33}
– {“pin”:898765} all three can be stored in single
collection
Within the same collection

5. Collection Introduction (Contd…)
 Collection Identified by name
 Restriction
 empty string ("")
 Null character
 Reserved Names

6. Document Introduction
• Each document identified as special key “_id”
• Ordered set of keys with associated values.
• JSON structure
• E.g
– {“fName" : “Anish!"}
– {“fName" : “Anish!", “age" : 32}
– Type Sensitive these are not equal
• {“Age" : 3}
• {“Age" : “3”}
• Key always start with “_” underscore which
means it’s reserved.

7. Database Introduction
 MongoDB group collection in databse.
 Naming Restriction
 Empty String as name
 Null character
 All lower case
 Feature
 Single Instance many database
 Reserved Database name cannot be used for our
application
 E.g NameSpace
 Collection Name : user
 Database Name : college
 Namespace will become college.user

8. Thank you for
watching feedback
appreciated…………
…………..