Mongodb

MONGODB

• cross-platform
• document oriented database
• high performance
• high availability
• easy scalability

TODO: read

• https://www.tutorialspoint.com/mongodb/mongodb_overview.htm
• implement a simple MongoDB server

Concept

• based on the concept of a collection and document

1. Database
   • a physical container or collections
   • each db has it own sets of files
   • a single MongoDB server typically has multiple databases
2. Collection
   • a group of MongoDB documents
   • equivalent of an RDBMS table
   • a collection exists within only a single database
   • collections do not enforce schema
   • typically all documents in a collection are similar or related in purpose
3. Document
   • a document is a set of key-value pairs.
   • documents have dynamic schema
     • means documents in same collection do not need to have same set of fields or structure
     • common fields in a collection's documents may hold different types of data