CODEWITHSUNDEEP
nosqlkey-valueaws-documentdb
variable
variable

Reputation: 9664

What is the format of key value vs document db?

I am new to NOSQL and understand that there are 4 types:

  1. Key value

  2. Document

  3. Columnar

  4. Graph db

This question is regarding the key value and document types. I am trying to understand how the data in these formats look.

For example, the key value format is:

{
 "ID" : "001",
 "Name" : "John",
 "Grade" : "Senior",
 "Classes" : {
      "Class1" : "English"
      "Class2" : "Geometry" 
      "Class3" : "History"
   } 
}

How does the document format look like?

Upvotes: 1

Views: 242

Answers (1)

Joseph Idziorek
Joseph Idziorek

Reputation: 5071

Here is an overview of the different data models: https://youtu.be/q81TVuV5u28?t=1175

Think about the difference in database models using the dimensions of 1/data format and 2/access patterns. Both key-value and document models have similar data formats but have different access patterns (i.e., key-value vs. ad-hoc query and aggregations).

Upvotes: 1

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