Tip 1 : Machine coding practice is needed.
Tip 2 : System design with reasoning for every statement
Tip 1 : Projects should be based on scale.
Tip 2 : Previous experience in payments will help
Implement an in-memory relational datastore
Features:
Create table
Delete Table
Insert row
Update row
Delete row
Create Index on a single column
Done it in an object oriented approach.
Defined the services and pojos which are needed.
Used appropriate DS
Package Pickup Service
General discussion on previous experience. Products which were designed by me.

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What is the purpose of the return keyword?