Concurrent Model In Software Engineering

The concurrent development model, sometimes called concurrent engineering The concurrent process model can be represented schematically as a series of major technical activities, tasks, and their associated states. For example, the engineering activity defined for the spiral model is accomplished by invoking the following tasks: prototyping and/or analysis modeling, requirements specification, and design. The activity-analysis-may be in any one of the states noted at any given time. Similarly, other activities (e.g., design or customer communication) can be represented in an analogous manner. All activities exist concurrently but reside in different states. For example, early in a project the customer communication activity has completed its first iteration and exists in the awaiting changes state. The analysis activity (which existed in the none state while initial customer communication was completed) now makes a transition into the under development state.

• V Model In Software Engineering
• Concurrent Development Model In Software Engineering

The concurrent process model defines a series of events that will trigger transition from state to state for each of the software engineering activities. For example, during early stages of design, an inconsistency in the analysis model is uncovered.

V Model In Software Engineering

If, however, the customer indicates that changes in requirements must be made, the analysis activity moves from the under development state into the awaiting changes state. The concurrent process model defines a series of events that will trigger transitions from state to state for each of the software engineering activities. Concurrency, in computing, refers to when multiple path of execution (threads or processes) are running at the same time. This is a very loosely defined term and may refer to multiple things:. Multiple processes or threads executing on the same processor are said to be running concurrently. M ultiple processes or threads executing on different processors may be said to be 'truly concurrent,' since they can be running instructions at the same time (without the need of a CPU scheduler).

Concurrent Development Model In Software Engineering

Even a CPU with a pipeline may be said to be executing several instructions concurrently. Concurrency will allow simultaneous access of the same data, which can be accessed by different users. Andaaz movie songs download. There are two different locks that can be applied: Exclusive, while the user has access to the data, the row will become locked - allowing the user to insert, update or delete records. This e nsures that the data can only be modified by one user at a time, avoiding multiple changes. Shared Lock, users can view the data in a read only format, users are unable to change or update the data, an example of a shared lock, could be a SELECT statement. This method may not be useful for large, unique or highly complex projects.

This method cannot be a success if the team is not sufficiently motivated and nor is unable to work cohesively together. Success depends on the extremely high technical skills of the developers. There are times when the team ignores necessary quality parameters such as consistency, reliability and standardization. Hence this can make project quality management hard to implement during the project management life cycle. It is believed the German mathematician Max Planck was instrumental in this. There was the wave-particle theory of light, it acts like a wave ( say in focusing lenses, for example, not too different physics-wise from, say tuning a radio, and yet it is also seen as particles.

Is it matter or energy. Light is of course, energy. The notable analogy of the wave/particle duality ( as it was called) would be the situation of waves on the ocean which are both en energy ( the motion of the waves, often following a sine pattern), and matter- H20. That is the best anaogy. There is also the Quantum ( like quantity) theory of light.