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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.
Describe about the Environmental model It indicates environment in which system exists. Any small or big system is a sub-system of a larger system. For illustration, if softw
What are the demerits of spiral model? i. It is depends on customer communication. If the communication is not suitable then the software product that gets developed will not r
Explain any two graphical design notations used in procedural design
What are the two levels of testing? i. Component testing Individual components are tested. Tests are derived from developer' s experience. ii. System Testing The group
What are the characteristics of software measurement? Measured property Object of measurement Source of measure Purpose measurement Context of measurement.
You are preparing a bid for a refinery control system for Australian Petroleum Ltd (APL) using the CoCoMo 81 estimation model. You are familiar with industrial control system softw
Question 1 . What are the drawbacks of RAD Model Question 2 . Explain why reliability is more important than efficiency? Question 3 . What are the activities of funct
What are the various elements of data design? i. Data object - The data objects are identified and relationship between various data objects can be shown using ERD or data dict
Q. What do you understand by black box testing? Black Box Testing:-Black Box Testing is as well called behavioural testing focuses on the functional requirements of the softwar
Define maintenance. Maintenance is explained as the process in which changes are executed by either modifying the existing system's architecture or by adding latest components
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