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Briefly explain what is to be done during defining problem statement.
To define Problem Statement of a system, define what is to be done and how you can go to implement that. Your statement should include mandatory features, as well as the optional features of system to be developed.
You should include:
What is problem and its scope,
What is required?
Application context
Assumptions
Performance needs.
Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
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Every School has many teachers and many students. Each student is assigned to one school and each teacher works for one school only. Each teacher teaches more than one subject but
Create role named role_table that allows a user to create tables. Using role_table allow users kripa and reena to create tables. CREATE ROLE role_table; GRANT CREATE ANY TABLE
explain ER Modeling?
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Give an example of multiple inheritance. One example of multiple inheritance is a committee for students affair which include faculty and administrative staff member.
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
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