Activity Diagrams – Advantages, Disadvantages and Applications of Use

Activity diagrams describe the actual work flow behavior of a system in Information Technology. These diagrams are very similar to state Diagrams because activities are the actual state of doing something. These diagrams describe the actual state of activities of a system by showing all the sequence of activities performed. Also, these diagrams can show activities that are conditional or parallel.

When to Use: Activity Diagrams

Activity diagrams should be used in alignment with other modeling techniques like interaction diagrams and State diagrams. The main reason behind using these diagrams is to model the work flow behind the system being designed. these Diagrams are also useful for analyzing a use case by describing what actions need to take place and when they should occur, describing a complicated sequential algorithm and modeling applications with parallel processes.

Activity diagrams' advantages:

  • UML modeling language included that these diagrams are normally easily comprehensible for both analysts and stakeholders.
  • In UML for the IT Business Analyst, "The activity diagram is the one most useful to the IT BA for depicting work flow [because] it is simple to understand-both for BAs and end-users."
  • Since they are among the most user-friendly diagrams available, they are generally regarded as an essential tool in an analyst's repertoire.
  • Additionally, as stated above, activity diagrams allow an analyst to display multiple conditions and actors within a work flow through the use of swimlanes. Swimlanes, however, are optional as a single condition or actor is normally displayed without them.

Activity diagrams' disadvantages:

UML modeling language include that these diagrams have the potential to become overly complex because their user-friendly nature may lend itself to an all-inclusive description. In other words, since it is so simple to display the information related to the project, why not include all of it? When an analyst has a large project, creating a single, overly complex diagram can be a temptation.

However, as one author notes, "if you are using activity diagrams to define the structure of a work flow, you should not attempt to explore several levels of activity graphs down to their most 'atomic' level." Instead, an analyst should try to present a new diagram for each work flow, or if more applicable, to use swimlanes to present different players within the same work flow.

Another aspect of these diagrams is that they may not be used in lieu of a state diagram or sequence diagram because "activity diagrams do not give detail about how objects be or how objects collorate." This is not a disadvantage per se, but it is important for an analyst to keep in mind when applying diagrams to their work.

In conclusion, activity diagrams are fairly easy to get the hang of, and will be useful for most projects because they plainly and moderately clearly demonstrate how things work. "Unlike many diagramming techniques, these diagrams also enable the depiction of multiple choices and actors within a work flow, and they are easy for even non-technical users to follow

Applications of activity diagram:

This diagram has been extended to specify flows among steps that transmit physical matter (eg, gasoline) or energy (eg, torque, pressure).

  • Additional changes allow the diagram to better support continuous behaviors and continuous data flows.
  • The UML 2 specification significantly prolonged the features and scale of activity diagrams beyond their earlier classification as a special case of state diagrams.
  • Today, activity diagrams can be thought of as flow charts for the 21st century, and UML modelers use activity diagrams to describe it.
  • Also, these diagrams are useful in following methods:
  • Business Rules
  • Functions that occurs in parallel
  • Complex chain of multiple use cases
  • Software flows and logic control configurations
  • Procedures with judgment points and alternate flows
  • Single use cases

Source by Preeti DG

Requirements Before Someone Become Successful in Forex Trading Using FAP Turbo

Not everyone was lucky to be successful in using FAP Turbo, most of them received nothing and lost all their investment, which leads them to post all over the Internet and degrade this trading robot. This article will show you the requirements that you need in order to have the best results and in order to be successful in Forex trading using FAP Turbo.

According to the developers of FAP, the only ones who were able to receive the most amount of profits, were the ones who were able to stay calm in spite of the severe market conditions. Some traders tend to stop the robot once it sees an intriguing loss and searches for another trading robot. You should always understand the FAP does not have the ability to work immediately well with some trading style. It needs to lose some trades before you can start seeing some distinct changes in the trade results.

This is the main reason why I am always suggesting people to be familiar with the trend of the market first before using any trading robots. This will help them improve their trading style and will also improve the results they will be receiving with their robots. FAP Turbo can help them be successful in Forex trading but only after they were able to update it regularly and let it match their trading style.

Another reason for some people to fail in using FAP is because they are afraid of purchasing a Virtual Private Server. This is a service that will host your robot and will allow it to trade 24 hours a day and seven days a week. This service costs $ 70 per month and is a bit expensive for small scale traders, but you should always keep in mind that you have a great advantage if you can participate in trades round the clock.

These are some of the requirements before you can become successful in Forex trading using FAP Turbo. Always remember that simply purchasing the robot will not make you rich beyond your wildest imagination. Keep working and success will naturally follow through.

Source by Adam S. Jones