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