Now, since we have already been introduced to mongo and its server is setup. We shall now move on to performing basic CRUD operations. Lets take a use case example of ‘Company’ database that stores employee information. We wish to store employee name, email address, age and multiple addresses. Traditionally in RDBMS we would create an Employee table and Address Table having foreign key reference to ‘employee id ‘ Incase of NoSQL, we will be creating Employee documnet which will have store employee information like name, email, age and an array of employes address. Following is a snippet of the schema defined { "name" : "", "email" : "", "age" : “”, "address" : [ ... ] } Thus to begin with, we will first define the entities. We have employee as an aggregate root entity that stores list of address having 1-M relatioship. Address Entity is represend as @Embeddable as it is embaded in another aggregate root entity. Employee is...
