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Explain what is Aggregation ?
Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in the ER Model. This is shown by placing the relationship between two entities along with the entities in a box and setting up a relationship between this box and another entity.
what is object-identity
The basic merits of decomposition. The Advantages of Decomposition 1. Separate person can work on each subsystem. 2. A particular software engineer can specialize in a
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
Text Processing: Use readLines to read SOU.txt into R. Create a vector called Pres containing the names of the presidents giving each speech. To do this, rst identify the lin
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
Give some encryption techniques? A) DES B) AES C) Public key encryption
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
Give an example of enforcement in Typing. You can understand the idea of enforcement as it makes sure objects of dissimilar classes may not be interchanged as below: Exampl
What is catalog in DBMS? Catalog - A relational DBMS maintains information about every table and index in which it contains. A catalog is a collection of special tables that st
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