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Question 1:
a) What is the difference between a non-impact and impact printer?
b) Which type of printer is generally used in a supermarket to print your receipt? Describe the reason for this choice?
c) Differentiate between application software and system software.
d) List tasks that are commonly performed by an operating system.
Question 2:
a) Describe the term ‘Database Management System'.
b) Differentiate between a primary and a foreign key. Provide an appropriate example to illustrate your answer.
c) What are the basic benefits of using a relational database management system?
Question 3:
It is decided to implement a software solution in your organization. However, the manager could not decide whether to develop the software by a local firm or to purchase a ready-made software package.
To help the manager, you are required to elaborate on FIVE advantages and FIVE disadvantages of buying a pre-written software package as compared to having one developed by a local software development company?
A Distributed Transaction Let us demonstrate the concept of a distributed transaction by considering a banking system having of three branches located in 3 different cities. Ev
what is natural join?
A Functional dependency is described by X Y between two groups of attributes Y and X that are subsets of R specifies a constraint on the possible tuple that can make a relation
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
the of super market system done in database
What are the three types of data sources used with ODBC? An ODBC file data source is a file that can be shared between database users. An ODBC system data source is one that is
A relation instance indicates as r is a collection of tuples for a given relational schema at a exact point of time. A relation state r of the relation schema R (A 1 ,A 2 ,.....
#questiononsider the following relation: CAR_SALE =(CAR_ID,oPTION_TYPE, Option_listpreice, Sale_date, Option_discountedprice)..
What is the disadvantage of a call by reference? During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to alters to th
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
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