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(a) Provide the description of the following ODMG schema in the Object Definition Language (ODL).
(b) Based on the above object database, write the following queries in the Object Query language (OQL):
What is Conceptual Schema? Conceptual Schema - Conceptual schema elaborates the structure of the overall database for a community of users. It hides the details of physical sto
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
how to operate database in access ?
What are two special events? The two special events are as "entry" and "exit". Any action which is marked as linked to entry event is executed whenever given state is entered v
The Enhanced Entity Relationship Diagram (ERD) produced with a drawing or case tool. Your EERD must use a ''standard'' notation style such as Crows Foot or Chen. Please note that t
What is the role of ORDER By Clause? ORDER BY clause: The ORDER BY clause permits you to sort the records in your result set. The ORDER BY clause can just be used in select s
Which component is not included in database environment ? A users component is not included in database environment.
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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