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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 software is developed for a college, then college would be part of University. If it's developed for University, University will be part of national educational system. Hence, when model of the system is made these external interfaces are defined. These interfaces reflect system's relationship with external universe (known as environment). Environment of a college system is demonstrated in figure below.
What is Entity It is most elementary thing of an organisation about which data has to be maintained. Each entity has unique identity. It's represented by rectangular box with
Explain in detail about data modelling. Data modeling makes use of the ERD. Having of 3 interrelated information. The data object. Attributes. Relationsh
schema tools
Define Software design. a. Software design is a step by step process through which requirements are translated into a "blue print" to construct the software. b. The blue pr
Nonfunctional Requirements Performance Requirements PE-1: The Clue-Less system shall accommodate 6 users during peak usage, with an estimated average session duration of 15 m
Explain Spiral model The spiral model is separated into number of frame works. These frameworks are indicated by task regions. Usually there are six task regions. In spir
Which type of software must not be automated? Following types of software must not be automated: - Incomplete/Unstable software since they are still undergoing changes -
Write down the Data dictionary for the data item "Telephone Number". Names: Telephone number Aliases: none Where to use /How to use: assess against set-up Explanation
What is Exception? Ans) An event that causes suspension of normal program implementation. Types contain addressing exception, operation exception, data exception, overflow excep
Explain ISO 9000 ISO 9000 An international set of standards for quality management. Applicable to a range of organisations from manufacturing to service industries.
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