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Example:
RELATIONAL SCHEMA for PERSON:
PERSON (PERSON_ID: integer, NAME: string, AGE: integer, ADDRESS: String)
RELATION INSTANCE
In this instance, m = 3 and n = 4
PERSON_ID
NAME
AGE
ADDRESS
1
Sanjay Prasad
35
b-4,Modi Nagar
2
Sharad Gupta
30
Pocket 2, Mayur
Vihar.
3
Vibhu Datt
36
c-2, New Delhi
Therefore current relation state reflects only the valid tuples that show a particular state of the real world. Though, Null values can be assigned for the cases where the values are missing or unknown.
Data Fragmentation "Fragmentation includes decomposing the data in relation to non-overlapping component relations". Why do we require fragmenting a relation?
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
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Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we
what do you understand by enhanced entity-relationship
what is entity in database system?
Explain Domain calculus Domain calculus is one of the types of the relational calculus. The formal specification of the domain calculus was planned after the development of the
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The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
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