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Define the concept of generalization
A generalization is relationship between specific kind of thing and general thing. It is also known as "is-a-kind-of" relationship. Inheritance can be modelled using generalization. In UML, it is represented by a solid directed line with a large open arrow pointing to parents.
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
There are two major types of fragmentation: Horizontal& Vertical. Horizontal fragments, as the name suggests are subsets of tuples and vertical fragments are subsets of attributes
What are the advantages of creating a table from existing table?
what is RDBMS? how it works? good example.
What are the requirements to ensure the objectives of file management principle is realized?
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
want a idea for final year project
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
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