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IS 391
Quiz 2
30
Business
Undergraduate 3
05/17/2011

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Cards

Term
Scope creep
Definition
when the work keeps piling up and before you know it, the tasks are too great to handle
Term
CSF: Critical success factor (CSF)
Definition
a factor that is critical to an organization’s success
Term
Analysis
Definition
-Defining processing, requirements, constraints, costs, and benefits. -Developing functional specifications and prototypes. -Reviewing specifications and prototypes.
Term
Design
Definition
Putting together the parts (software, hardware, people, procedures, data) to provide the functionality with the right operating characteristics within budget and on schedule.
Term
Things that get designed
Definition
input forms -output reports; screens -data files; procedures -data security; data controls -contingency plans
Term
ERD : Entity Relationship Diagram
Definition
diagram that shows the relationship between entities and shows the attributes of the entities
Term
DFD: Data flow diagram
Definition
illustrates the movement of information between external entities and the processes and data stores within the system
Term
Functional requirement
Definition
What functions (tasks) the system must be able to do.
Term
Performance requirement
Definition
How `well’ does the system perform those tasks.
Term
GUI: Graphical User Interface
Definition
is a type of user interface that allows users to interact with electronic devices with images rather than text commands. GUIs can be used in computers, hand-held devices such as MP3 players, portable media players or gaming devices, household appliances and office equipment
Term
Development
Definition
Build Technical architecture; Build the database and programs; Programmer teams; Structured Walkthroughs
Term
Testing
Definition
-Functions performed correctly -Usability / acceptance -stress (e.g., enough ummph to handle all users)
Term
Implementation
Definition
Install system into the organization. User Documentation and Training
Term
Planning
Definition
Define the system to be developed; ??CSF; Set the project scope; Key aspect of SDLC, difficult to do … scope creep; Develop the project plan including tasks, resources, and timeframes
Term
Maintenance
Definition
Build a help desk to support system users; Provide an environment to support system changes
Term
User acceptance training
Definition
tests if a system satisfies its acceptance criteria
Term
Database
Definition
maintains information about various types of objects (inventory), events (transactions), people (employees), and places (warehouses)
Term
Advantages of Databases
Definition
Increased flexibility; Increased scalability and performance; Reduced information redundancy; Increased information integrity (quality); Increased information security
Term
DBMS: Data manipulation component
Definition
allows users to create, read, update, and delete information in a database
Term
Primary key
Definition
identify the various entity classes (tables) in the database; a field (or group of fields) that uniquely identifies a given entity in a table
Term
Foreign key
Definition
a primary key of one table that appears an attribute in another table and acts to provide a logical relationship among the two tables
Term
Validation rule
Definition
criterion used in the process of data validation, carried out after the data has been encoded onto an input medium and involves a data vet or validation program
Term
Entity
Definition
a person, place, thing, transaction, or event about which information is stored
Term
Attribute: (fields, columns)
Definition
characteristics or properties of an entity class. The columns in each table
Term
Aggregate query
Definition
Average, Min, Max, Total (Sum/ count), only include the attributes that you want to use to count by
Term
Parameter query
Definition
[please enter a state]
Term
One to many
Definition
modeled by placing the primary key from one table and putting it into many table.
Term
Many to many
Definition
A student may be enrolled in many classes, a class may have many students
Term
Query-by-example (QBE)
Definition
users can graphically design the answers to specific question
Term
Relationship
Definition
the abstraction of a set of associations that hold systematically between different kinds of things in the real world.
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