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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):
Write a query that display ename annual salary and comm from emp table
What is self-transition? If there is a transition which goes back to same state, it is known as "self- transition." With a trigger action exit action would be executed f
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
After going by the database architecture, let us now dwell on an important query: how is the data organised in a database? There are a lot of basic structures that exist in a datab
statical data
Implementation and SQL Applications
Distributed Database Management System
How external/conceptual mapping and conceptual /internal mapping is performed
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Vertical Fragmentation- Vertical fragmentation groups together only those attributes in a relation that are used jointly by various important transactions. A vertical fragment is d
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