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When must a function throw an exception?
A function must throw an exception when it's not able to fulfil its promise.
As soon as function detects a problem which prevents it from fulfilling its promise, it must throw an exception. If function is able to handle problem, recover itself and deliver promise, the exception shouldn't be thrown.
If an event occurs very frequently then exception handling isn't the best way to deal with it. It requires proper fixation.
Why is maintenance of a software important? The alteration of a software product, after delivery, to correct faults, to improve performance or other attributes, or to adapt th
State about the Data Dictionary This is another tool of requirement analysis that reduces complexity of DFD. A data dictionary is a catalog of all components of a system. DFD
What are the two levels of testing? i. Component testing Individual components are tested. Tests are produced from developer's experience. ii. System Testing The group
Software restructuring Software restructuring changes source code and / or data an effort to make it amenable to future changes. In general, restructuring does not change the o
Q. Why is good design important for a product? Ans: A superior design is the key to successful product. Almost 2000 years previously a Roman Architect recorded the followin
Checks the interfaces among program elements for consistency and adherence to predefined axioms or rules.
Define Data Dictionary. The data dictionary is defined as an organized collection of all the data elements of the system with accurate and rigorous definitions so that user and
Describe how to perform Risk Analysis during software testing. While a test plan is being formed, risks involved in testing the product are to be taken into consideration with
What are the various testing activities? i. Test planning ii. Test execution iii. Test case design iv. Data collection v. Effective evaluation
How to handle concurrency: Mechanisms Locks Semaphores Monitors Synchronized methods Methods Deadlock avoidance Verification Sim
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