May 2024
Intermediate to advanced
325 pages
12h 2m
English
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
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Mobile Databases and Object-Oriented DBMS
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235
Lack of universal data model – There is no universal data model for an OODBMS, and
most models lack the theoretical foundation. There is no standard object-oriented query
language, although ODMG has specifi ed an object query language (OQL), which has
become a de facto standard.
Lack of experience – The use of OODBMSs is very limited in comparison with relational
DBMSs.
No support for security and views – Most OODBMSs do not provide a view mechanism.
In conventional DBMS, views provide several benefi ts, such as security and data indepen-
dence, that are not possible in an OODBMS environment. Moreover ...
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