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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.
consider the following flow chart, a. Draw the flow graph and show the edges, regions and nods clearly b. show the independent paths c. calculate the cyclomatic complexity in three
identification need
Q. Define Aggregation among objects? Aggregation between objects represents a relationship. It is a whole/part relationship. Aggregation may perhaps imply containment.
What is the meaning of cardinality in data modelling? Cardinality in data modelling, cardinality specifies how the of occurrences of one object is linked to the number of occur
Class diagram: A class diagram in the Unified Modelling Language (UML) is a type of static structure diagram that defines the structure of a system by showing the system's classes
What is a boundary value analysis? A boundary value analysis is a testing method in which the elements at the edge of the domain are selected and tested. It is a test case desi
Throw-Away Prototyping: Also known as close ended prototyping. Throwaway or Rapid Prototyping refers to the formation of a model that will eventually be discarded rather than beco
Important factors related to library storage operation: It is essential to consider some important factors related to library and information storage and retrieval operations
Explain the concept of Decision Tables Decision table models complex logic into precise yet compact way. A decision table lists causes and effects in a matrix. Every column
four circumstances where incremental model is appropriate?
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