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Question 1 What are the advantages of DBMS approach in managing data?
Question 2 What are the services provided by a database system
Question 3 List and briefly describe various threats to the data base security
Question 4 What are the characteristics of data warehouses
Question 5 Discuss briefly the types of database utilities and their functions
Question 6 Explain the Three -Tier Client/server architecture for Web Applications
Question 7 What are the ACID properties?
Question 8 Create employee table and implement SQL Insertion, deletion and update queries on that employee table
Question 9 Write a SQL query on employee table to find maximum salary, minimum salary and also average and sum of all employees' salaries
What is a homogeneous distributed database? In homogeneous distributed databases, all sites have the same database management system software, are aware of one another, and agr
atient(PNumber, Name, NHS_no, Amount_due, DNO, Doctor, Medical_Treatment), relation of schema Staff(StaffNum, Name, DNO, Task) and relation of schema Dept(DNO, Name, Location, Dire
Problem: (a) Given the following relation: Stats(Name,Sex,Children, Occupation, Salary, Tax, Audits) Write SQL code to define the following security constraints: (i) User
In order to keep pace with competitors, Space Ltd has decided to implement an ERP system in order to replace its old legacy and manual systems. Management does not have much knowle
What are ways of finding out either an update is required or not for derived attributes? The ways to find out an update is required or, not are as: Explicit update
The Concurrent Transactions Almost every commercial DBMS support multi-user environment. Therefore, allowing multiple transactions to proceed concurrently. The DBMS must make
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
examples of fields in a database
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
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