Diadvantages of OODBMS

List the disadvantages of OODBMS / What are the disadvantages of OODBMS?

Disadvantages of Object Oriented DBMSs (OODBMS)

• Lack of universal data model and lack of standards – there is no universally agreed model for OODBMS.

• Lack of experience – not easy for an end user. We need programmers to interact.

• Competition – Object Relational DBMS (ORDBMS) are much more easier to use and capable of providing object facility to the end user.

• Query optimization compromises encapsulation – The query optimization process requires complete understanding about the database in terms of table information and size etc. Hence, we need to compromise encapsulation (encapsulation is a language mechanism for restricting access to some of the object's components).

• Locking at object level may impact performance

• Complexity – OODBMS concept implementation is complex.

• Lack of support for views – no support for views manipulation

• Lack of support for security

• Poor performance – query optimization for OODBMS is complex.

• Unable to support large-scale systems – scalability issue.