Object databases have roots in both programming languages and database management. However, not all aspects of these two technologies blend together easily. One area of potential conflict arises when we try to completely separate persistence and type.
(a) Define the orthogonality of persistence and type.
(b) Discuss this issue for any three of the following subsystems:
(1) Queries
(2) Schemas
(3) Transactions
(4) Existence Semantics.

Question

Object databases have roots in both programming languages and database management. However, not all aspects of these two technologies blend together easily. One area of potential conflict arises when we try to completely separate persistence and type. 
(a) Define the orthogonality of persistence and type.
(b) Discuss this issue for any three of the following subsystems:
(1) Queries
(2) Schemas
(3) Transactions
(4) Existence Semantics.

Quizplus · Accepted Answer

The Answer of Object databases have roots in both programming languages and database management. However, not all aspects of these two technologies blend together easily. One area of potential conflict arises when we try to completely separate persistence and type. 
(a) Define the orthogonality of persistence and type.
(b) Discuss this issue for any three of the following subsystems:
(1) Queries
(2) Schemas
(3) Transactions
(4) Existence Semantics.

Object Databases Have Roots in Both Programming Languages and Database