Question

Suppose I want to make one application in Object Oriented Programing language let i.e. Java

what is the better thing to do from following?

–Either Use Relational Database i.e. mySQL + Object Relation mapping i.e. Hibernate

or.

–Use Object Oriented Database i.e. db4o

Why?

Answer 1

Well that depends on the application, the data-set etc etc.

Both systems have their advantage. Take also a look at this older stack-overflow question.

Here’s a few advantages of each system.

RDBMS + ORM:

• Lots of tools & libraries available for this combination.
• Lots of experience and knowledge available: Tutorials, Q&As, best pratices and people which can help are there.
• Fast for ‘flat’ data and ‘reporting’-kinds of operations.
• Many languages, tools and libraries can talk to a RDBMS

ODBMS:

• Faster than a RDBMS + ORM for nested, complex datasets.
• No complex mapping required.

Drawbacks of each system:

RDBMS + ORM:

• Mapping between relational and objects is not trivial. Can lead to all kinds of performance issues.

ODBMS:

• Much, much smaller community and less tools.