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what is er digram given that example of hospital,bank and library er digram.
What is Information System?
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
Read the description below and draw an Entity-Relationship diagram for it. You must use the symbols described in the course materials. This database will help the Parents Assocc
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
What is indexed sequential file organization? What are the applications of this organization? Ans: An index file can be employed to effectively overcome the problem of storing
what are the reasons having variable length records
Consider a table student (std_id, std_name, date_of_birth, percent_marks, dept_name). Write a QBE query to display names of Computer Science department students who have scored mo
Q. Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set. Entity is a t
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
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