One of the reasons specified was “data integrity”. Could someone please explain what that means in this case?
Hi @Ezhil_Nikhilan,
We assume you are referring to the sentence: “We’ll use a relational database since our consumer-related data is structured, and we want to ensure our data integrity.” Your question is what data integrity means in this context. A subscriber can have one or more topics. That means, in the topics relation (table), the subscriber will be a foreign key. Due to the relational database’s referential integrity enforcement, every topic will have valid subscribers. Additionally, a specific subscriber can not be deleted without disassociating it from the topics relation. Had we not used a relational database, application logic would have to take care of all such cases to ensure that overall data remains valid.
We hope the above explanation answers your question. Happy learning!
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