Document Model

Fields

A document consists of sets of fields that self-describe the data it encodes. Each set signifies a single pair of two associated elements:
The name identifying the field. 
The value that holds the data. 
Ditto Document
{
  _id: "123",
  field1: "abc",
  field2: 1,
  field3: {
    sub_field1: "xyz",
    sub_field2: 2
  }
}
{
  _id: "123",
  field1: "abc",
  field2: 1,
  field3: {
    sub_field1: "xyz",
    sub_field2: 2
  }
}
﻿
Names
Similar to most document-oriented databases, you can only use strings to encode field names in documents. 
For complete naming rules, see IDs, Paths, Strings, and Keywords﻿.
If you attempt to insert a type other than a string for a field property, as demonstrated in the following snippet, you will receive an error message.
 
{
    1: "numeric_fields_are_invalid_here",
    "this_part": "numeric_fields_are_valid_here"
}
{
    1: "numeric_fields_are_invalid_here",
    "this_part": "numeric_fields_are_valid_here"
}
﻿
Values
Field values can be encoded using various data types, including scalar type, providing flexibility in representing a wide range of information.
Following are the data types you can use to represent information in a Ditto document:
REGISTER
MAP
ATTACHMENT
Each data type contains two distinct components: a merge behavior and a scalar value to store. (See Data-Handling Essentials﻿)
Hierarchies
In the following structure, field properties are logically grouped to provide details about a specific car. 
This structure includes an embedded object encapsulating both the GPS latitude and longitude coordinates, as well as the physical address where the car is located:
﻿
﻿

Updated 23 Oct 2024

Did this page help you?

Consistency Models

Collections