text: All of the data for account1234 will be stored in the same database partition to ensure retrieval of 
  
  related data is quick. 
  
  Related resources: 
  
  • Item collections - how to model one-to-many relationships in DynamoDB - example of using 
  
  an item collection, a group of related items that share the same partition key value, as a way to 
  
  model one-to-many relationships 