with Guaranteed Pass Solutions 2025-
2026 Updated.
System - Answer a group of components that interact to achieve some purpose
Information System - Answer -a group of components that interact to produce information
-system of hardware, software, data, procedures and people to product info
5 Components of Information Systems - Answer hardware, software, data, procedures,
people
Management Information Systems (MIS) - Answer the development and use of information
systems that help organizations achieve their goals
MIS in use: Mabel's Label social media usage - Answer Mabel's Labels has a bunch of social
media channels that help the company connect with customers, increasing size of network
Information Technology (IT) - Answer -represents raw technology components of IS
(hardware, software, data)
-refers to methods, inventions, standards, products
True or False: IT alone can help an organization achieve goals. - Answer False. IT must be
embedded into an IS to help accomplish
objectives (tech must be combined with people and procedure)
Difference between IS and IT? - Answer IT is just hardware, software and data. IS includes IT
as well as people and procedure.
What is the ICT sector? - Answer Information and Communications Technology sector
What type of companies are involved in ICT sector? (4) - Answer -software and computer
services
-communications services
-ICT Manufacturing
-ICT Wholesaling
,Moore's Law - Answer Law stated that the density of circuits on an integrated chip was
doubling approximately every two years, and had been generally accurate for almost 5 decades
network effects/externalities - Answer increases in the value of a product to each user,
including existing users, as the total number of users rises
What did Hal Varian suggest in regards to IS and IT? - Answer Business is changing due to
advances in IS and IT, mobility devices will change what it means to go to work
What did David Ticoll suggest would happen within the next decade in regards to IS and IT? -
Answer -unlimited storage will be almost free
-analytical software will reveal hidden info
-WAN will become cheap, reliable and available
-tech trends will enable performance-enhancing innovations in almost every industry
MIS in use: Google - Answer -Gmail launched 10 years ago, supported entirely by advertising
-when email is sent/received, fresh column of ads appear
Model - Answer representation of reality that retains only selected details
Entity Relationship Diagram (model) - Answer a technique for visualizing the entities and
relationships in a database environment
Entity - Answer represents a discrete object (i.e. student, course, program at Western)
True or False: Entities are shown as rectangles, and their titles are capitalized - Answer True
Relationship - Answer Association between entities, represented by lines and written in
lowercase
Attributes - Answer describe characteristics of the entity
Primary Key - Answer field that uniquely identifies instance of each entity (i.e. SIN, student
number), underlined on E-R diagram
Instances - Answer actual data entered in attributes of an entity
, Cardinality - Answer relationship description - either one or many, represented by vertical
line or three lines branching out respectively
participation level - Answer relationship description - either optional or mandatory,
represented by circle or vertical line respectively
Professor can be chair of one department, department can only have one chair. this is an
example of ____ type of relationship. - Answer 1:1
Student registered in one faculty, faculty can have many student registered. this is an example
of _____ type of relationship - Answer 1:N
student is taking many courses, a course can be taken by many students. this is an example of a
_____ type of relationship. - Answer N:M
If relationship is 1:1 and both sides are either mandatory or optional, which entity gets the
foreign key? - Answer doesn't matter lol
If relationship is 1:1 and one side is mandatory and the other is optional, which entity gets the
foreign key? - Answer the mandatory entity must receive the foreign key
If relationship is 1:N, which entity get the foreign key? - Answer The ONE entity must receive
the foreign key
If relationship is N:M, where do the foreign keys go? - Answer In a connector entity named
after the relationship, written in lowercase, connected by a 1:N connection on either side
What does 'nullable' indicate on DIA? - Answer if the field can be blank
-checked/yes means it can be left blank
-unchecked/no means it must be filled
What does 'unique' indicate on DIA? - Answer if field can have same data as another
-checked/yes means data cannot be duplicated
-unchecked/no means data can appear in other records
Normalization - Answer The process of applying rules to a database design to ensure that
information is divided into the appropriate tables, eliminates data duplication