Chapter 1 : Introduction

Compass → GUI for MondoDB
Database names : collections and documents
- collections ≅ tables
- documents / objects ≅ registros
- namespace = <database>.<collection>
Datasets
- schema
- documents
- fields types:
  - int32
  - double
  - string
  - date
Fields with Documents as Values
- uso en índices
- nested documents : un documento (registro) puede contener otro documento (que contiene sus campos)
Fields with Arrays as Values
Filters:
- JSON format
- {«key»:«value»}
- equality filter : exact value
- range filter : {'birth year': {$gte: 1970,$lt: 1975}}
  - $gte(greater-equal), $lt(less than) : operators
geographical data
- many functions / filtes
- click+shift to select arround a point