Skip to main content

What is Waterfall Model ?

                            Waterfall Model

History of Waterfall Model : 

  • The first formal description of waterfall model is after introduced by wiston W.Royce in 1970 .
  • Royce Presented this model as an example of non-working model of flowed.

Waterfall Model Cycle :

  • it refers to as a linear sequential life cycle model .
  • in a waterfall model each phase must be completed fully before the next phase can began .
  • this is the most disadvantage of the waterfall model .
  • this type model suitable for small project and whose requirement is fixed .

When to use waterfall model :

  • Requirement are very well known .
  • product defination are statble .
  • project is small and simple .
Labels:

Comments

Post a Comment

Popular posts from this blog

how to Install Numpy, Pandas and matplotlib on ubuntu 18.04 and Linux Mint

Install Python, NumPy,Matplotlib for Python 3 on Ubuntu 18.04, Linux Mint, Debian Linux. This is a short article about installing Numpy, Pandas , Matplotlib, Python3 on the latest Ubuntu 18.04 LTS, Linux Mint, Debian Linux which comes with Python 3.6.5. Let’s start by making sure we have an updated system: 1 sudo apt update 2 sudo apt upgrade Now, let’s install NumPy, Pandas,Matplotlib : sudo apt-get install python-pip sudo pip install numpy sudo pip install pandas sudo pip install matplotlib Test numpy : Open up a Terminal in Your Linux Operating System by running the following: python3 At the Terminal, type the following: >>> import numpy as np >>> np.__version__ '1.13.3'   Test Pandas : Open up a Terminal in Your Linux Operating System by running the following: python3 At the Terminal, type the following: >>> import pandas as pd >>> pd.__version__ '0.22.0'   Test Matpl...
2 comments
Read more

Introduction to SQL and Database with example

            Introduction to SQL and Database What is SQL? SQL is a language used to retrieve and manipulate data in a RDMS. SQL stands for S tructured Q uery L anguage. What is a Database? A database is a place to store data. A relational database system (RDBMS) stores data in tables. Relational Database Tables A relational database stores data in tables. Each table has a number of rows and columns. The table below has 4 rows and 3 columns. SQL and Relational Databases A relational database contains tables which store data that is related in some way. SQL is the language that allows retrieval and manipulation of table data in a relational database.
Post a Comment
Read more

Library Management System DataFlow Diagram

Library Management System DataFlow Diagram 1) Zero Level DFD 2) 1st level DFD and 2nd level DFD
Post a Comment
Read more