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Explain about the E-R Diagram
Entity-relationship (E-R) diagram is detailed logical representation of data for an organisation. It is data oriented model of a system while DFD is a process oriented model. ER diagram represent data at rest whereas DFD tracks the motion of data.
ERD doesn't provide any information regarding functionality of data. It has 3 main components - data entities, their relationships and their associated attributes.
Depth of conditional nesting This is a measure of the depth of nesting of if-statements in a program. Deeply nested if statements are hard to understand and are potentially er
Write about software change strategies. The software change methods that could be applied separately or together are: Software maintenance - The alters are made in the software
Explain the Phased Waterfall Model It is a type of waterfall model where the project is separated into small phases and delivered at intervals by dissimilar teams. Different Te
Define the Design phase of SDLC In this stage, a logical system is built which fulfils given requirements. Design phase of software development deals with transforming custome
What does Verification represent? Verification shows the set of activities that are carried out to confirm that the software correctly executes the specific functionality.
What are the Problems of Prototyping In some organisations, theprototyping isn't as successful as anticipated. A common problem with this approach is that people expect much
Peripheral devices are irrelevant to the computer
What are the advantages and disadvantages of big-bang? Advantages: This approach is easy. Disadvantages: It is hard to debug. It is not simple to isolate errors while testin
What is cardinality in data modeling? Cardinality in data modeling, cardinality specifies how the number of occurrences of single object is related to the number of occurrences
identification need
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