THROWAWAY PROTOTYPING

THROWAWAY PROTOTYPING

• Throwaway prototyping is a type of Prototype.
• It is developed to show the clients how the system will look like when it is developed into a finished system.
• This can be developed within a very short time of period.
• Clients can check and re-examine their specifications.
• After this has been achieved, the prototype is thrown away.
• This can be developed with a very low budget.

PROTOTYPING

PROTOTYPE

• Prototype is the model or a sample of the system that is being developed.
• It is used to show the client how will the system look like when it is developed.
• It is like wire framing for a website.
  

ADVANTAGES OF PROTOTYPES

• As user see the development, there won't be any big errors.
• Low cost.
• As the system is built as the user needs, unwanted features will be omitted.

DISADVANTAGES

• There will be so many changes to the system, so there won't be a particular structure for the system.
• The time is taken to develop the prototype is very long.

TYPES OF PROTOTYPING

1. Throw Away Prototyping.
2. Evolutionary Prototyping.

WATERFALL PROCESS MODEL

WATERFALL PROCESS MODEL

• Waterfall Process Model is one of the common type of SDLC.
• This was developed by Winston W.Royce in 1970.
• This is the traditional process model.
• As it is called the Waterfall process model, not possible to go back to the previous stage.
• Ideal for small scale projects.
• Every stage must be completed to go to the next stage.

 

SYSTEM DEVELOPMENT LIFE CYCLE (SDLC)

SYSTEM DEVELOPMENT LIFE CYCLE

SDLC is the acronym of System Development Life Cycle. It is also known as Software Development Life Cycle. SDLC is the steps to develop a system or a software. If we follow SDLC when developing a system it will be a great success.
There are eight main stages in SDLC. But organization alter that according to their needs. So there are no any particular stages of SDLC. But according my knowledge there are eight main stages.

EIGHT STAGES OF SDLC

1. Problem Definition.
2. Feasibility Study.
3. System Analysis.
4. System Design.
5. System Development.
6. Testing.
7. Implementation.
8. Maintenance.

TYPES OF SDLC

1. Waterfall Process Model.
2. Prototyping.
3. Spiral Model.
4. V model.

DECISION SUPPORT SYSTEM (DSS)

DECISION SUPPORT SYSTEM

• This helps senior managers to take decisions by providing them analytics.
• This systems are very quick.
• They are very flexible too. 

EXECUTIVE INFORMATION SYSTEM (EIS)

EXECUTIVE INFORMATION SYSTEM

• This provides executive informations in an interactive way.
• That could be understand by anyone.
• These are for the Top level executives.
• It provides the summary of the entire organization.
• Very Expensive to run.

EXECUTIVE INFORMATION SYSTEM

• This provides executive informations in an interactive way.
• That could be understand by anyone.
• These are for the Top level executives.
• It provides the summary of the entire organization.
• Very Expensive to run.

MANAGEMENT INFORMATION SYSTEM (MIS)

MANAGEMENT INFORMATION SYSTEM

• Management Information System (MIS) collects all the information from TPS and converts it to report as for monitoring.
• Usually it is a Report Generator.
• MIS have large amount of inputs and they produce summary reports as output.
• It is used by the middle managers who manage the organization.
• There are three types of reports generated by MIS;

1. Detailed Report.
2. Summarized Report.
3. Exception Report.

DETAILED REPORT

It contains all the information about the product which is produced by the system. It has A-Z informations. By reading this report we can get an overall idea about the product.

SUMMARIZED REPORT

This is the report which contains the summarization of the product. This report is useful for the people who have an idea of the product.

EXCEPTION REPORT

This report is created for the products which are exceptional. The products which are not in the usual condition.

TRANSACTION PROCESSING SYSTEM

WHAT IS TRANSACTION PROCESSING SYSTEM?

• TPS is a system which collects and controls information and data about transactions which happens in a system.
• It controls the day to day transactions in an organization.
• TPS has high volumes of inputs and outputs.
• It is a basic busines system.
• There are two types of TPS;

1. Batch Processing.
2. Real Time processing.

WHAT IS BATCH PROCESSING?

Batch processing is where all the data and information are collected and processed later on as batch or a whole.

E.g; Paying as a cheque.

WHAT IS REAL TIME PROCESSING?

Real time processing is where data and information are processed at that particular time when the transaction occurs.
E.g; ATM (Automatic Teller Machine)

INFORMATION SYSTEMS

WHAT IS A SYSTEM?

A system is a collection of inter-related components which performs together to achieve a specific task.

WHAT IS AN INFORMATION SYSTEM?

An information system is a collection of things that interact and output the information needed for an organization.