MongoDB

• Most popular No-SQL DB
• Serves JSON documents but stores them as BSON (Binary Json)

Terminology

• Database: Database
• Collection: Table
• Shards: Part of the collection - Different custer on the drive for the same collection
• Replication: Multiple copies of the same shard
• Document: Record, row
• Field: Field, column
• Data type: Arrays, objects. Documents limited to 16mb
• GridFS: Documents heavier than 16mb