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Question 1 Explain ER model
Question 2 What are the characteristics of a computer provided information?
Question 3 What are facts and guidelines to be considered when selecting a character set?
Question 4 Explain
Question 5 Write an SQL query to create the student table with the necessary columns and check whether that column allows null values.
Question 6 Create a student table with the following attributes Student name, student roll no, 5 different subjects. Write SQL query for the following conditions
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 are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
Project Description: Looking to prepare automated trading engine for alternate cyprto currencies starting with Cryptsy, finally integrating into other exchanges. Need to work wi
Explain differance between Primary and secondary storage ? Primary and secondary storage Computer storage is classified within primary(main) memory and secondary(per
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
What is meant by heuristic optimisation? Discuss the main heuristics that are applied during query optimisation. Ans: In heuristic optimization, heuristics are employed to r
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
Rules Of Data Normalisation Let us now summarise Normalisation with the help of various clean rules. The following are the necessary rules for the Normalisation process: 1.
Difference between SQL and SQL*Plus SQL SQL*Plus SQL is a language SQL *Plus is an environment It is bas
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