CRUD AND JAD

Dr. Himanshu HoraSRMS College of Engineering & Technology

Bareilly (INDIA)

(CREATE, RETRIEVE, UPDATE, DESTROY)

CRUD

The acronym CRUD represents the most common SQL operations performed on a database.

INTRODUCTION (CRUD)

Letter Operation MySQL Statement

C Create INSERT

R Retrieve SELECT

U Update UPDATE

D Destroy DELETE3

CRUD ANALYSIS

• A good way to validate an ERD is to do a CRUD analysis on it.

– CRUD is an acronym for create, retrieve, update, delete.

• These are the four basic operations that a database allows.

– Part of checking a data model for completeness and accuracy is making sure that all the CRUD functions specified by the business scenario and the business rules are represented in the ERD.

• Keywords to look for in the client interviews, business scenarios, and so on are INPUT, ENTER, LOAD, IMPORT, RECORD, and CREATE.

• These all indicate that a record is created in the database at this time. Review the requirements for these keywords.

• Does your data model account for all these functions?

Create Operation

• Keywords to look for are VIEW, REPORT, BRING UP, PRINT, FIND, READ and LOOK UP.

• These all point to retrieving information from the database. Review the requirements for these keywords.

• Does your data model account for all these functions?

Retrieve Operation

• Keywords to look for are CHANGE, MODIFY, ALTER and UPDATE.

• These all point to updating information that is already in the database. Review the requirements for these keywords.

• Does your data model account for all these functions?

UPDATE OPERATION

• Keywords to look for are DISCARD, REMOVE, TRASH, PURGE, and DELETE.

• These all point to deleting information that

is already in the database. Review the requirements for these keywords.

• Does your data model account for all these functions?

DELETE OPERATION

(JOINT APPLICATION DEVELOPMENT)

JAD

INTRODUCTION

• Joint Application Development, or JAD, is a process originally developed for designing a computer-based system.

• JAD is a technique that allows the developers, managers, IT Professionals and end users to work together to build a product.

• It is a series of highly structured interviewed sessions and is aimed to achieve project’s goal.

• The JAD should cover the complete development life cycle of a system.

• The JAD is usually a 3 to 6 month well-defined project.

• For large-scale projects, it is recommended that the project be approached incrementally, and that separate JAD's be used for each increment.

JAD SCOPE

WHY?• JAD reduces the amount of time required to

develop systems since it eliminates process delays and misunderstandings and improves system quality.

• It also improves the quality of the final product by focusing on the up-front portion of the development lifecycle, thus reducing the likelihood of errors.

HOW?• JAD centers around a structured workshop session.• Participants get together in a room to discuss the

problem/project.• Everyone hears what the rest of the group has to

say.

JAD STRUCTURE

• They are less frequent

• More structured, and productive

• An agenda provides the structure

• The facilitator directs the process• Visual aids clarify concepts being discussed and

the group dynamics, with constant feedback, stimulates creativity

JAD PARTICIPANTS

• Project sponsor• Project lead• Facilitator• Scribe• End users• Developers• Observers• Subject matter experts

BENEFITS OF JAD• Enhanced communication and relationship

between business end users and IT personnel

• Build consensus and ownership

• Reduced system cost and development time

• Reduced function creep

• Improved system quality and productivity

• Design cross-functional solutions

• Helps project teams get focused and stay focused

• Helps you get the right job done at the right time!

1:en.wikipedia.org/wiki/

Create,_read,_update_and_delete

2:jsj.sict.edu.cn/.../S05L04_Understanding%20CRUD

%20Requirements

3:ssyu.im.ncnu.edu.tw/course/CSDB/Unit10.ppt

4:www.ksinc.com/itpmcptools/JADGuidelines.pdf

5:en.wikipedia.org/wiki/Joint_application_design

REFERENCE

THANK YOU

Dr. Himanshu HoraSRMS College of Engineering & Technology

Bareilly (INDIA)