Discuss in detail about data modeling, Software Engineering

Assignment Help:

Discuss in detail about data modeling.

Data modelling makes use of the ERD.
Consists of three interconnected information.

The data object.

Attributes.

Relationships.

Cardinality and Modality

Cardinality means the specification of the number of occurrences of one object that can be linked to the number of occurrences of another object.
One-to-one cardinality.
One-to-many cardinality.
Many-to-Many cardinality.
Modality of a relation is 0 when no explicit relationship or relation is optional.
Modality is 1 when occurrence of relationship is mandatory.

Entity/Relationship Diagrams

Elements are

Data Objects.

Attributes.

Relationships.

Various type indicators.

Related Discussions:- Discuss in detail about data modeling

Converting DFD to a structure chart, Sample answered questions

Sample answered questions

What is affinity diagram, A group process that takes large quantity of lang...

A group process that takes large quantity of language data, like as a list developed by brainstorming, and separates it into categories.

Explain the per-action modeof QTP, Explain the Per-action modeof QTP ...

Explain the Per-action modeof QTP - Best used in below cases: - When creating simple record and run tests when there is just one or very few tests which correspond to int

Define data objects and relationship, Define Data objects, attributes & rel...

Define Data objects, attributes & relationship. Data object: Representation of any collective information that must be understood by software. It can be any external entity.

Describe the method of technical documentation, Describe the method of Tech...

Describe the method of Technical documentation This usually comprises: - Program listing/coding - Programming language(s) used - Algorithm/Flowchart - Purpose o

Determine the structure of design concepts, Structure of design It ...

Structure of design It allows the decomposition of a large system into smaller, more manageable units with well explained relationships to the other units in a system. N

State the coding standards, State the Coding standards Coding standar...

State the Coding standards Coding standards normally give the guidelines about following: i) Name of the module ii) External and Internal documentation of source code

Explain the process of prototyping, Explain the process of Prototyping ...

Explain the process of Prototyping Prototyping is a process which enables developer to create a small model of software. IEEE 610.12 standard defines prototype as a preliminary

Explain the bottom-up approach, What is bottom-up approach? System deve...

What is bottom-up approach? System developed beginning from detailed modules. Testing begins from the detailed modules and proceeds up to the higher levels of hierarchy.

Transform mapping and transaction mapping, how was transform mapping like?

how was transform mapping like?

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages