Management Information systems

1 . A non-unique key would be used to locate

A . the person with social security number

B . all people with red hair

C . a specific book in a library

D . the owner of a car with plate number 9

E . of the above

Explanation : A non-unique key is redundant and may appear several times for many tuples and does not have the ability to distinguish any particular tuple uniquely so it cannot be used for any purpose . However it can be used in combination with the primary key as a composite

br primary key

2 . A salesperson can have many customers , but a customer can only have one salesperson , therefore the relationship is

A . one-to-one

B . one-to-many

C . many-to-many

D . many-to-one

E . all of the above

Explanation : As a salesperson can have many customers which means that one salesperson is connected to many customers and various customers may have the similar salesperson

3 . A specific DSS is

A . a software like Excel , IFPS , etc

B . an application to support a decision problem

C . an application to support a task problem

D . a tool to compute specific functions , like interest , average , etc

E . all of the above

Explanation : The definition of DSS specifies all the options

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4 . The following statement is not true in regard to expert systems

A . the knowledge is in the system , not in the user

B . it is capable of mimic the judgments of an expert

C . it is capable of learning as it solves problems

D . it is capable to provide mid-run and after-run explanations

E . process both quantitative and qualitative (symbolic ) data

Explanation : Expert systems cannot process qualitative data as it is emotion based which can be done only by the humans

5 . A product or service that customers have come to expect from an industry , which must be offered by new entrants if they wish to compete and survive , is known as

A . switching costs

B . loyalty programs

C . entry barriers

D . bargaining power

E . of the above

Explanation : Follows from the definition

6 . When you use Outlook mail software to send electronic mail you are in a

A . Time-Sharing System

B . Client-Server System

C . Value-added system

D . Private network system

E . EDI system

Explanation : The Outlook mail software is connected with a Microsoft mail server which is responsible for mailing purpose

7 . The Systems Life Cycle (SLC ) concept implies that

A . the development of a system never ends

B . systems are created , used and later discontinued as obsolete

C . computer systems are unstable and require constant maintenance

D . a combination of B and C

E . of the above

Explanation : The SLC implies that software system is created using a strategy and requires constant maintenance

8 . Which form of e-commerce currently accounts for the majority of all e-commerce revenues

A . B2B

B . B2C

C . C2B

D . C2C

E . of the above

Explanation : The B2C model specifies that online businesses are catering to customers for the sale of their products

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