Comparison between Logic Tools in System Analysis and Design

There are three types of logic tools which used by the system analyst to describe the problems or systems in the analyzing, documentation and design phases of the system analysis and design. The logic tools are vary in complexity and have different strict to describe the same system. Therefore it,s essential to compare between the logic tools to reach the best tool to describe the problem that the system analyst wishes to solve in the System Development Life cycle (SDLC). The advantages and drawbacks of each toor wil be cleared by using practicar examples and conclude the results. we will compare between these tools by using the same example to see the differences.