when development of systems takes place then we thought about the designing of the system in two phases one is Front-end and another one is Back-end. Physical Design is the real implementation of your system but the logical design gives you the way to understand the systems data flow and the conceptual things.

1. System Analysis and
Design- Logical Design
Created By:
Girdhar Ratne
B.Sc.(I.T.)5th Semester

2. Introduction to System Design
Architectural Design
Physical Design
Logical Design
Types of Design
User Interface Design
Forms and Reports
Designing Interfaces and Dialogues
Objectives

3. Introduction to System Design
Systems design is the process of defining the
architecture, modules, interfaces, and data for
a system to satisfy specified requirements.
System Design classified into:
Architectural Design
Physical Design
Logical Design

4. Architectural Design
The architectural design of a system emphasizes the
design of the system architectural that describes
the structure, behavior and more views of that system
and analysis.

5. Physical Design
The physical design relates to the actual input and output
processes of the system.
This is explained in terms of how data is input into a
system, how it is verified/authenticated, how it is
processed, and how it is displayed.
In physical design, requirements about the system
 Input requirement,
 Output requirements,
 Storage requirements,
 Processing requirements,
 System control and backup or recovery.

6. Logical Design
The logical design of a system pertains to an abstract
representation of the data flows, inputs and outputs of
the system.
Data flows: DFD, ERD and so on.
Inputs and Outputs:
Form as input
Report as output

7. Logical Design Process
Transformation
 Translate from ERD to tables
 Represent relationships
 Transform relationships
 Create preliminary list of tables, and indicate primary,
alternate, candidate, and foreign keys.
Normalization
Norms form:1NF, 2NF, etc.

8. Types of Design
Front- end Design
- also known as User Interface or Client-side Design
Back-end Design
- also known as Server-side Design

9. User Interface Design
A user interface is the part of the system with which user
interact.
It includes the screen displays that provide navigation
through the system.
The screen and forms that capture data, and the report that
the system produces.
It includes:
Navigation Mechanism
Input Mechanism
Output Mechanism

10. Forms and Reports
Form:
-A Form is a business document that contains
some predefined data and often includes some
areas where additional data are to be filled in.
Report:
-A Report is also a business document that contains
only predefined data; it is a passive document used
for reading or viewing.

11. Designing Interfaces and
Dialogues
Process of Designing:
User focused activity
Follow-up prototype approach
Requirement determination

12. Designing Interfaces:
Designing Layout
Controlling in Input
Provide Feedback
Providing Help

13. Designing Dialogues:
A dialogue is the sequence in which information is
displayed to and obtained from a user.
The dialogue design process consists of three major
steps:
Designing the dialogue sequence
Building a prototype
Assessing usability

14. References
 System Analysis and Design
- Dennis, Wixom, Roth
 Modern Systems Analysis and Design
- Joseph S.Valacich, Joey F. George
 http://easyux.net/wp-content/uploads/2016/05/14-6.jpg
 https://swimage.com/wpcontent/uploads/2018/09/ActivityReportSample1.png