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Systems Analysis And Design. Elliott Bays, Taylor Ivy, Mark Sarosky , David Martin, Ovidiu Ravasan. Systems Analysis. Definition- Taking a complete analysis along with gathering all the information about a project and all of it’s aspects. Required Skills. Communication/Social Computer

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systems analysis and design

Systems Analysis And Design

Elliott Bays, Taylor Ivy, Mark Sarosky, David Martin, OvidiuRavasan

systems analysis
Systems Analysis
  • Definition- Taking a complete analysis along with gathering all the information about a project and all of it’s aspects.
required skills
Required Skills
  • Communication/Social
  • Computer
  • Understanding problems and their solutions
  • Integrating technology and businesses
systems design
Systems Design
  • Definition- Designing a solution made up of different hardware and interconnecting them all together to me specific needs of a business.
software development life cycle
Software Development Life Cycle
  • This is the timeline of creating and changing the systems to improve or implement new ideas. It has 7 basic steps:
  • Step 1: Planning/Researching
  • Step 2: Systems analysis
  • Step 3: Systems design
  • Step 4: Implementation
  • Step 5: Integration and testing
  • Step 6: Official establishment
  • Step 7: Maintenance
interative approach
Interative Approach
  • The development process in which it enters a constant loop until the project is perfected.
  • Starts with the initial planning
  • Then goes through the Requirements and Analysis & Design.
  • After to Testing
  • Than Evaluation
  • Till it is ready to be used
description
Description
  • Planning out what needs to be done
  • Organizing a schedule
  • Managing people
  • Looks for the best in order to get the job done
project planning steps
Project Planning Steps
  • Brainstorm an idea
  • Gather supplies and a team
  • Set a budget based on financial resources
  • Go in depth of every single detail
  • Have a Plan B
  • Let the customer know what the project is all about
  • Ensure communication between team members
  • What outside sources are needed
  • Overviews the project
structured approach
Structured Approach
  • Used most often
  • An ordered process
  • Multiple Steps
object oriented approach
Object Oriented Approach
  • Abbrevated- OOA
  • Gives a different outlook
  • Languages used for OOA:C++(Command Prompt)Java(GUI)
data flow diagram
Data Flow Diagram
  • A data flow diagram helps to show the relationships between the components in a program or system.
  • DFD’s were in waysthe replacementof flowcharts andpseudocode.
data flow diagram1
Data Flow Diagram
  • DFD’s make it much easier for both technical and nontechnical audiences to understand what's going on.
  • DFD’s can provide high level system overviews.
  • DFD’s can also provide detailed system component representation.
data flow diagram components
Data Flow Diagram Components
  • A DFD consists of four basic components which shows how data flows in a system: entity, process, data store, and data flow.
  • Entity – Entity is the source or destination of data. Entities provide data to the system or can receive data from it.
  • Process – A process receives input and generates some output.
data flow diagram comp continued
Data Flow Diagram Comp. Continued
  • Data Store – A data store is where data is stored between processes and is used for later retrieval or by the same process.
  • Data Flow – Data flow is the movement between the other three components of a DFD, the entity, process, and data store.
slide19
OOA
  • Completely different approach to information systems
  • Views information system as collection of interacting objects that work together to accomplish tasks
  • Objects – things in computer system that can respond to messages
  • Conceptually, no processes, programs, data entities, or files are defined – just objects
  • OO languages: Java, C++, C# .NET, VB .NET
types
Types
  • Object-oriented analysis (OOA)
  • OOA is concerned with developing an object model of the application domain
  • Object-oriented design (OOD)
  • OOD is concerned with developing an object-oriented system model to implement requirements
  • Object-oriented programming (OOP)
  • OOP is concerned with realising an OOD using an OO programming language such as Java or C++
class diagram
Class Diagram
  • Class Diagrams describe the static structure of a system, or how it is structured rather than how it behaves. These diagrams contain the following elements:
  • Classes, which represent entities with common characteristics or features. These features include attributes, operations and associations.
  • Associations, which represent relationships that relate two or more other classes where the relationships have common characteristics or features. These attributes and operations.
use case
Use Case
  • A use case is a scenario that describes the use of a system by an actor to accomplish a specific goal.
  • An actor is a user playing a role with respect to the system. - people, other systems.
  • Scenario -A sequence of steps that describe the interactions between an actor and the system.
  • The use case model consists of the collection of all actors and all use cases.
definition
Definition
  • User interface is the interaction between people (users) and information systems (computers, networks, etc.)
physical aspects
Physical Aspects
  • The save icon. Picture of a save button has always remained the same from history. Everyone associates it with saving a file.
  • The physical aspect of user interface deals with the actual components used to interact with a system
  • These components include the keyboard, mouse, computer screen, and the computers data storage units
  • It is important to utilize these aspects to their fullest ability while making the interactions needed simple and easy to use
perceptual aspects
Perceptual Aspects
  • Integrated by using human interactions such as voice activations hand gestures, body movement.
  • Example: facial recognition, Xbox Kinect, the Wii
  • The perceptual aspects of user interfaces deals with the way information is presented to the user
  • The information should be presented in a neat, easy to follow layout that is easy for the user to follow and understand
  • Perceptual aspects include all of the data displayed and places emphasis on a good flow of information and a natural feeling layout
user centered
User Centered
  • Combination of Physical and Perceptual aspects.
  • Made to be very user friendly.
  • The main priority of a well made user interface is to be user centered
  • This means that the interface is made to meet all of the users needs using the least effort possible from the user
  • The ideal user interface is simple, effective, sequential, and requires no prior knowledge of the system to use
the end

The End

Any questions?

sources
Sources
  • http://www.bls.gov/k12/computers06.htm
  • http://www.mks.com/resources/resource-pages/software-development-life-cycle-sdlc-system-development
  • http://managementhelp.org/projectmanagement/
  • http://ratandon.mysite.syr.edu/cis453/notes/DFD_over_Flowcharts.pdf
  • http://thinkvitamin.com/design/10-user-interface-design-fundamentals/
  • Dennis A, Wixom B. H. and Roth R.M., 2006, Systems analysis and design, Third edition, John Wiley &Sons, USA
  • Hoffer, JA, George, JF & Valacich, JA, 2006, Modern systems analysis and design, 3rd edition, Addison-Wesley, USA