MongoDB

• use JSON.parse(json_file) to convert JSON file to JS Object.
• Use db.collection.insertOne() to insert a single document.
• db.collection.insertOne, createIndex,

MongoDB is an open-source document database.

• High Performance
• Rich Query Language
• High Availability
• Horizontal Scalability
• Support for Multiple Storage Engines

Mongoose

Mongoose is a JavaScript library that allows you to define schemas with strongly typed data. Once a schema is defined, Mongoose lets you create a Model based on a specific schema. A Mongoose Model is then mapped to a MongoDB Document via the Model’s schema definition.

Mongoose is an Object Document Mapper (ODM). This means that Mongoose allows you to define objects with a strongly-typed schema that is mapped to a MongoDB document.

Mongoose provides an incredible amount of functionality around creating and working with schemas. Mongoose currently contains eight SchemaTypes that a property is saved as when it is persisted to MongoDB. They are:

• String
• Number
• Date
• Buffer
• Boolean
• Mixed
• ObjectId
• Array

Each data type allows you to specify:

• a default value
• a custom validation function
• indicate a field is required
• a get function that allows you to manipulate the data before it is returned as an object
• a set function that allows you to manipulate the data before it is saved to the database
• create indexes to allow data to be fetched faster

The ObjectId data type commonly specifies a link to another document in your database. For example, if you had a collection of books and authors, the book document might contain an ObjectId property that refers to the specific author of the document. _id is the common syntax for creating a primary key in Mongoose and MongoDB. We can use the populate() method to pull in the associated information when needed.

More

• mongo-express

  $ npm install -g mongo-express

• docker mongod, local mongod, mongo-express, robomongo ?