செவ்வாய், செப்டம்பர் 08, 2009

DBMS - RDBMS & C - C++

DBMS - RDBMS
Data Base Management System - Relational Data Base Management System (Referntial Integrity + DBMS)
Support Single user - Multi users
Flat data, no relation ship concept (Relation between two files) - Tabular structure, Data is represented in the form of relations ie., some relation between the entities
It treats Data as Files internally - It treats data as Tables internally
can be saved in any order - should be saved in table format
Normalization process will not present - Normalization process will present
Process of Managing data for efficient retrivel & strorage (Eg : Sysbase, Foxpro) - Relations (tables) to acquire information retrival (Eg : SQL, Oracle, My-SqlServer)
User to create and maintain a database - Recovery of the database in case of loss of
database due to system failure or any other reason
Client Server concept is not present - Client Server Architecture is present
Primary Keys, Foreign keys is not possible - Possible
It supports 3 rules of E.F.CODD out off 12 rules - It's support min. 6 rules of E.F.CODD
No secure data - Multi level Security


C - C++

c is a procedural programming language - C++ is an object oriented programming language
C does not have classes and objects - C++ have classes and objects
C is Object based Applications like Structures and Unions - C++ is Object Oriented Language that means entire
application will be depending on Objects only.
C is a collection of FUNCTIONS - C++ is a collection of FUNCTIONS and/or CLASS.
The main function could not return a value - The C++ the main function shuld return a value
c is a topdown approach - C++ is bottom up approach
FOCUS ON PROCEDURES - FOCUS ON DATA
C does not support the C++ programme - C++ support the C program.



Courtesy : http://www.allinterview.com/showanswers/56803.html
http://www.geekinterview.com/question_details/28436

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