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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
Have database built but having problems with some questions that go with the database
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
Define weak and strong entity sets? Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets. Strong entity set: Entity set that
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Process of Adjustment of inheritance During object design, inheritance is readjusted by rearranging classes and operations, and abstracting common behaviour.
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
Emergence of Client Server Architecture Some of the pioneering work that was completed by some of the relational database vendors permitted the computing to be distributed on m
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
sir, could anybody help me in getting complete information about the mentioned topic
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