In this recipe, we will see how to model data for this Android application and create DynamoDB tables accordingly.
To get started with this recipe, you need to know how to create a table in DynamoDB using the console.
To perform data modeling for any Android application using the NoSQL database as a backend, we need to first start with the queries, which we would like to execute on the tables. Considering the requirements, we will need at least two tables:
User: This is a table used to store information of a valid user's details along with the credentials
Contact: This is a table used to store information of all the contacts added by users
As we will be using the User table to save the registered user information, as well as to sign in, we can use an e-mail ID as a hash key for this table.
Here, we don't need a range key, as the e-mail ID being a primary hash key should be good enough to recognize a user for registration and...