Creating a Schema Definition

To define a schema for model, you need to create a new instance of a Schema object. The Schema object definition accepts an object that describes the schema as the first parameter and an options object as the second parameter:

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new Schema(definition, options)

The options object defines the interaction with the collection on the MongoDB server. Table 16.1 lists the options that are most commonly used.

Table 16.1 Options that can be specified when defining a Schema object

For example, to create a schema for a collection called students, with a name field that is a String type, an average field that is a Number type, and a scores field that is an Array of Number types, you use:

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var schema = new Schema({
  name: String,
  average: Number,
  scores: [Number]
}, {collection:'students'});