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The advantages of a database management system (DBMS) include :-
Data integrity and elimination of duplication.
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
difference between MIS and DSS
The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
Problem 1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples 2 Explain the following performance tuning techn
random file orgnization
Given the following set of functional dependencies {cf→ bg, g → d, cdg → f, b → de, d → c} defined on R(b,c,d,e,f,g) a. Is cf→ e implied by the FDs? b. Is dg a superkey?
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Demonstrate the Design of associations During object design phase we must design a strategy to implement associations. Association may be unidirectional or bi-directional. Wha
write program
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