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Example
RELATION SCHEMA for STUDENT:
STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
STUDENT
ROLLNO
NAME
AGE
t1 3467
Shikha
[email protected]
20
t2 4677
kanu
Where t1 = (3467, Shikha, [email protected], 20) for this relation instance, m = 2 and n = 4.
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
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WHAT IS DSS? WRITE ITS REQUIREMENTS.
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Normal 0 false false false EN-US X-NONE X-NONE
Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc
intent locking
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Is it mandatory to declare all the tables in Report by the key word tables for all the tables that exist in the structure of LDB, and are being explained in the Database part of LD
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