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how many types of data model in DBMS? explain data abstraction with its different level
Can you scan double-sided documents - and remove blank pages? Our software and imaging systems supports duplex scanning, at the same time scanning both sides of a page. Program
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
Attribute Preservation This is a easy and obvious necessity that includes preserving all the attributes that were there in the relation that is being decomposed.
What is an Operand? The data on which the operation is to be performed is known as an Operand
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
I need to Map an E-R diagram to a relational schema
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
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