System Design

systemdesign

powerpoint presentation

28/04/2023

Students: Jarold Bryan Balbastro Raymart Heredera Kenneth Bajar Griopuerox FranciscoInstructor: Mr. Sedfher Galedo

''the process of defining elements of a system like modules, architecture, components and their interfaces and data for a system based on the specified requirements."

system design

02.description

quick agenda (system Design)

01.definition

04.input

03.exemplification and methods

07.logical design

08.Physical Design

06.types of SD

05.output

10.detailed

12.bibliography

09.Architectural

11.conclusion

01

Definition

system design

01. Definition

System Design

Systems design is the process of defining elements of a system like modules, architecture, components and their interfaces and data for a system based on the specified requirements. It is the process of defining, developing and designing systems which satisfies the specific needs and requirements of a business or organization.

keywords

System Design, Element of a System.

02

Description

System Design

02. Description

"The goal of system design is to allocate the requirements of a large system to hardware and software components. The system design activity starts after the system requirements analysis has been completed."

Description of System Design

A systemic approach is required for a coherent and well-running system. Bottom-Up or Top-Down approach is required to take into account all related variables of the system. A designer uses the modelling languages to express the information and knowledge in a structure of system that is defined by a consistent set of rules and definitions. The designs can be defined in graphical or textual modelling languages.

03

EXEMPLification

System Design

03. Exemplification and method

Exemplification

Some of the examples of graphical modelling languages are>Unified Modelling Language (UML): To describe software both structurally and behaviourally with graphical notation. >Flowchart : A schematic or stepwise representation of an algorithm. >Business Process Modelling Notation (BPMN): Used for Process Modelling language. >Systems Modelling Language (SysML): Used for systems engineering.

Design Method

>Architectural design: To describes the views, models, behaviour, and structure of the system.>Logical design: To represent the data flow, inputs and outputs of the system. Example: ER Diagrams (Entity Relationship Diagrams).>Physical design: Defined as a) How users add information to the system and how the system represents information back to the user. b) How the data is modelled and stored within the system. c) How data moves through the system, how data is validated, secured and/or transformed as it flows through and out of the system.

04

Input

system Design

04. Input

Input system design

Input Design In an information system, input is the raw data that is processed to produce output. During the input design, the developers must consider the input devices such as PC, MICR, OMR, etc. Therefore, the quality of system input determines the quality of system output. Welldesigned input forms and screens have following properties − >It should serve specific purpose effectively such as storing, recording, and retrieving the information. >It ensures proper completion with accuracy. >It should be easy to fill and straightforward. >It should focus on user’s attention, consistency, and simplicity.

Objectives for Input Design >The objectives of input design are − >To design data entry and input procedures >To reduce input volume >To design source documents for data capture or devise other data capture methods >To design input data records, data entry screens, user interface screens, etc. >To use validation checks and develop effective input controls.

04. Input

Data Input Methods It is important to design appropriate data input methods to prevent errors while entering data. These methods depend on whether the data is entered by customers in forms manually and later entered by data entry operators, or data is directly entered by users on the PCs. A system should prevent user from making mistakes by − >Clear form design by leaving enough space for writing legibly. >Clear instructions to fill form. >Clear form design. >Reducing key strokes. >Immediate error feedback. Some of the popular data input methods are − >Batch input method (Offline data input method) >Online data input method >Computer readable forms >Interactive data input

Input Integrity Controls Input integrity controls include a number of methods to eliminate common input errors by end-users. They also include checks on the value of individual fields; both for format and the completeness of all inputs. Audit trails for data entry and other system operations are created using transaction logs which gives a record of all changes introduced in the database to provide security and means of recovery in case of any failure.

05

Output

System Design

05. OutPut

The design of output is the most important task of any system. During output design, developers identify the type of outputs needed, and consider the necessary output controls and prototype report layouts.

objectives of output design

The objectives of input design are −>To develop output design that serves the intended purpose and eliminates the production of unwanted output. >To develop the output design that meets the end users requirements. >To deliver the appropriate quantity of output. >To form the output in appropriate format and direct it to the right person. >To make the output available on time for making good decisions.

05. Output

External Outputs Manufacturers create and design external outputs for printers. External outputs enable the system to leave the trigger actions on the part of their recipients or confirm actions to their recipients. Some of the external outputs are designed as turnaround outputs, which are implemented as a form and re-enter the system as an input. Internal outputs Internal outputs are present inside the system, and used by end-users and managers. They support the management in decision making and reporting. There are three types of reports produced by management information − >Detailed Reports − They contain present information which has almost no filtering or restriction generated to assist management planning and control. >Summary Reports − They contain trends and potential problems which are categorized and summarized that are generated for managers who do not want details. >Exception Reports − They contain exceptions, filtered data to some condition or standard before presenting it to the manager, as information.

05. output

Output Integrity Controls Output integrity controls include routing codes to identify the receiving system, and verification messages to confirm successful receipt of messages that are handled by network protocol. Printed or screen-format reports should include a date/time for report printing and the data. Multipage reports contain report title or description, and pagination. Pre-printed forms usually include a version number and effective date.

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output and input

System design

06. METODOLOGÍA

Outputs for System Design System design gives the following outputs − >Infrastructure and organizational changes for the proposed system. >A data schema, often a relational schema. Metadata to define the tables/files and columns/data-items. >A function hierarchy diagram or web page map that graphically describes the program structure. >Actual or pseudocode for each module in the program. >A prototype for the proposed system.

System design takes the following inputs − >Statement of work >Requirement determination plan >Current situation analysis >Proposed system requirements including a conceptual data model, modified DFDs, and Metadata (data about data).

06

Types

system design

06. METODOLOGÍA

types of system design

Logical Design Physical Design Architectural Design Detailed Design

There are many types of System Design but we only tackle about the following:

07

Logical Design

SYstem DEsign

07. Logical Design

Logical design pertains to an abstract representation of the data flow, inputs, and outputs of the system. It describes the inputs (sources), outputs (destinations), databases (data stores), procedures (data flows) all in a format that meets the user requirements. While preparing the logical design of a system, the system analyst specifies the user needs at level of detail that virtually determines the information flow into and out of the system and the required data sources. Data flow diagram, E-R diagram modeling are used.

While preparing the logical design of a system, the system analyst specifies the user needs at level of detail that virtually determines the information flow into and out of the system and the required data sources. Data flow diagram, E-R diagram modeling are used.

"he process of determining the logical data structures that are required to support information resources within an organization.."

08

physical Design

system design

08. Pysical design

Physical design relates to the actual input and output processes of the system. It focuses on how data is entered into a system, verified, processed, and displayed as output. It produces the working system by defining the design specification that specifies exactly what the candidate system does. It is concerned with user interface design, process design, and data design . It consists of the following steps − >Specifying the input/output media, designing the database, and specifying backup procedures. >Planning system implementation. >Devising a test and implementation plan, and specifying any new hardware and software. >Updating costs, benefits, conversion dates, and system constraints.

+ Info

"Process of transforming netlist into layout"

09

Architectural Design

System design

09. ARCHITECTURAL dESIGN

It is also known as high level design that focuses on the design of system architecture. It describes the structure and behavior of the system. It defines the structure and relationship between various modules of system development process.

10

Detailed Design

System design

10. Detailed Design

The detail design phase involves completing the product's design. The design team works toward completion of the specifications for the product and its subassemblies, product elements, and manufacturing processes. Like the other phases of product development, detail design is an iterative process.

11

Conclusion

system design

09. CONCLusionS

It's worth noting that a design system is not an end project, but more of an on-going process that is always open to changes and iteration. A well constructed design system will save software teams a lot of time in the long run, and the consistency gains make the time and effort dedicated to the process of building the design system a successful investment.

>The interface should be simple complete and effecient. > have a clear division of responsibility among parts

+ Info

bibliography

Bibliography

TutorialsPoint(2023).System Analysis & Design - System Design. Retrieved from https://www.tutorialspoint.com/system_analysis_and_design/system_design.htm

The Economic Times(2023). What is 'Systems Design'?.2023 Bennett, Coleman & Co. Ltd. Retrieved from https://economictimes.indiatimes.com/definition/systems-design

TutorialsPoint(2023). Software Design Basics. Retrieved from https://www.tutorialspoint.com/software_engineering/software_design_basics.htm#:~:text=Detailed%20Design%2D%20Detailed%20design%20deals,to%20communicate%20with%20other%20modules.

TutorialsPoint(2023).Input / Output & Forms Design. Retrieved from https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_input_output_forms.htm#

Thanks for your attention

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