Explain about the e-r diagram, Software Engineering

Assignment Help:

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.

Related Discussions:- Explain about the e-r diagram

High level architecture, Devise an architecture for a system that manages t...

Devise an architecture for a system that manages the daily operation of a motor vehicle service and repair business. The system will have the following functionality:- Administrati

Illustrate the example of data dictionary of payroll, Illustrate the exampl...

Illustrate the example of Data dictionary of payroll Data dictionary of payroll may include below fields: PAYROLL = [Payroll Details] = @ employee name + employee + id

Explain throw-away prototyping and evolutionary prototyping, Q. Explain thr...

Q. Explain throw-away prototyping and evolutionary prototyping. Discuss the differences between the two. Ans Throw-Away Prototyping as well called close ended prototyping .

Explain the term- system maintenance, Explain the term- System Maintenance ...

Explain the term- System Maintenance update hardware as new items come on market or company changes in any way which requires new devices to be updated/added Update sof

Write down the src for add a node, Write down the SRC for "Add a node" ...

Write down the SRC for "Add a node" Function Add node Description Adds a node to an existing design. Inputs Node type, Design Identifier, Node position Source

Quality control concept, (i) Concept definition of Quality Control and Qual...

(i) Concept definition of Quality Control and Quality Assurance (ii) Tools used in quality control (iii) Acceptance sampling and process control (iv) Statistical tools for

Computer graphics, normal vector

normal vector

What is the use of user interface prototyping, What is the use of User Inte...

What is the use of User Interface prototyping? This prototyping is used to pre-specify the look and feel of user interface in an effective way.

State the level 5 of key process areas, Level 5 KPAs 1)Defect Prevent...

Level 5 KPAs 1)Defect Prevention (DP): It discovers causes of defects and devises techniques which prevent them from recurring. 2)Technology Change Management (TCM): It

Define external coupling, Q. Define External coupling? External coupli...

Q. Define External coupling? External coupling: A form of coupling in that a module has a dependency to other module external to the software being developed or to a particul

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages