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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.
Problems and feasibility study
Q. What is Common coupling? Common coupling: With general coupling module A and module B have shared data. Global data areas are usually found in programming languages. Formu
Why Software maintenance is require Software maintenance is done due to the below factors. i) To rectify the errors which are encountered during the operation of software.
FAST stands for :- FAST :- Facilitated Application Specification Technique
State Lehman's First law. A program that is used in true world environment essentially must change or become progressively less useful in that environment.
Describe the various types of coupling? i. Data coupling - The data coupling is possible by parameter passing or data interaction. ii. Control coupling - The modules share c
Question: (a) Differences between programme managers and project managers. (b) A small computer system controls the entry of vehicles to a car park. Each time a vehicle pu
Level 5 (Optimising) Organisation satisfies all the requirements of level-4. This is final level. Organisation at this maturity level is considered almost perfect. At this st
Software life cycle starts when a software product is first conceived and ends when it is no longer in use. It contains aspects such as initial concept, requirements analysis, inte
What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are checked and program with write statements is loaded to get clues to er
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