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Is Tight coupling always bad?
Tight coupling means classes and objects are dependent on one another. In general, tight coupling is usually not good because it reduces the flexibility and re-usability of the code while Loose coupling means reducing the dependencies of a class that uses the different class directly.
Which condition is called tight coupling?
Tight Coupling: It is when a group of classes are highly dependent on one another. This scenario arises when a class assumes too many responsibilities, or when one concern is spread over many classes rather than having its own class. This situation particularly is called as tight coupling.
What is meant by tightly coupled?
Tightly-coupled software means routines (modules, programs) that work in only one type of system and are dependent upon each other. For example, an operating system depends on its drivers to activate a peripheral device. Such drivers would require extensive programming changes to work in another environment.
What are the benefits of tight coupling?
A major advantage of a tightly coupled architecture is that it enables the rapid and efficient processing of large volumes of data, provides a single point of truth instead of several, often redundant, data sources, and enables open access to data throughout the organization.
External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices. Control coupling is one module controlling the flow of another, by passing it information on what to do (e.g., passing a what-to-do flag).
When does content coupling occur in procedural programming?
Procedural programming. Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding – a basic design concept.
What are the disadvantages of a tightly coupled system?
Tightly coupled systems tend to exhibit the following developmental characteristics, which are often seen as disadvantages: A change in one module usually forces a ripple effect of changes in other modules. Assembly of modules might require more effort and/or time due to the increased inter-module dependency.
What is the relationship between coupling and cohesion?
Low coupling often correlates with high cohesion, and vice versa. Low coupling is often a sign of a well-structured computer system and a good design, and when combined with high cohesion, supports the general goals of high readability and maintainability.