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Determine object representation
As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects, what is exact representation of object attributes.
Explain the concept of a data model ? Data Model - Model is an abstraction procedure which hides irrelevant details although highlighting details relevant to the application
what is specialization?
A set of possible data values is called? A set of possible data values is called as domain.
Show a centralised schema to support the operation of the system you have chosen, including in particular: the product catalogue; the outlets and respective stocks; customer record
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
the of super market system done in database
Explain the disadvantages of a file processing system? Ans: Disadvantages of File Processing Systems include: 1) Data Redundancy 2) Data Inconsistency 3) Difficult to acce
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
What is Outer join? They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of w
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