Unit 2: Electronic Data Interchange
E-Commerce & Digital Marketing notes · PTU syllabus (PGCA1921)
On this page
- Unit summary
- EDI concepts
- Traditional EDI systems
- Value-added networks and financial EDI
- EDI applications and limitations
- Standardisation of EDI and e-commerce
- EDI software implementation
- EDI business applications
- Legal, security and privacy issues
- E-governance in India
- Key terms
- Quick revision
- Important questions
Unit summary
Electronic data interchange lets businesses exchange documents computer to computer. This unit covers EDI concepts, applications and limitations, standardisation of EDI and e-commerce, EDI software implementation, business applications, legal, security and privacy issues, and e-governance in India.
After this unit you can
- Explain EDI concepts, applications and limitations
- Describe EDI standards and software implementation
- Identify EDI business applications and legal, security and privacy issues
- Explain e-governance in India
PTU syllabus topics
- EDI concepts
- applications and limitations
- EDI-e-commerce standardization
- EDI software implementation
- EDI business applications
- legal/security/privacy issues
- e-governance in India
- 1Buyer's system creates an order
- 2Converted to standard EDI format
- 3Sent through a VAN or internet
- 4Seller's system translates it
- 5Order processed and acknowledged
Topic 1
EDI concepts
Electronic Data Interchange (EDI) is the computer-to-computer exchange of business documents (purchase orders, invoices, shipping notices) in a standard format between trading partners.
- 1
Buyer's application creates a purchase order
- 2
EDI translator converts it to a standard format
ANSI X12, UN/EDIFACT
- 3
Transmission through a VAN or direct link
- 4
Supplier's translator converts it to its format
- 5
Supplier's application processes the order
- 6
Functional acknowledgement sent back
- Benefits: speed, fewer errors (no re-keying), lower paper and processing costs, better inventory management (JIT), stronger partner relationships.
- Limitations: high set-up costs, standards complexity, need for trading-partner agreements.
Standards
ANSI X12, UN/EDIFACT, XML-based
Translation software
Converts internal formats to standard and back
Communication network
Value-added network (VAN), direct connection or internet (AS2)
Trading-partner agreement
Legal terms of exchange
Application interface
Links EDI to ERP and accounting
Topic 2
Traditional EDI systems
Electronic Data Interchange (EDI) is the computer-to-computer exchange of business documents (purchase orders, invoices, shipping notices) in a standard format between trading partners.
- 1
Buyer's application creates a purchase order
- 2
EDI translator converts it to a standard format
ANSI X12, UN/EDIFACT
- 3
Transmission through a VAN or direct link
- 4
Supplier's translator converts it to its format
- 5
Supplier's application processes the order
- 6
Functional acknowledgement sent back
- Benefits: speed, fewer errors (no re-keying), lower paper and processing costs, better inventory management (JIT), stronger partner relationships.
- Limitations: high set-up costs, standards complexity, need for trading-partner agreements.
Topic 3
Value-added networks and financial EDI
- Value-added network (VAN): a private network provider acting as an electronic post office — mailboxes, translation, security, audit trails, store-and-forward; charges per transaction.
- Financial EDI (FEDI): electronic exchange of payment-related information between businesses and banks — payment orders, remittance advice, bank statements; links with EFT (NEFT/RTGS) for straight-through processing.
Topic 4
EDI applications and limitations
Speed
Documents exchanged in minutes, not days
High set-up cost for small firms
Accuracy
No re-keying, fewer errors
Rigid standards and mapping effort
Cost
Less paper, postage and staff time
VAN charges per transaction
Business
Faster order cycle, lower inventory, better partner relations
Needs agreement and compatible systems with every partner
- Typical documents: purchase orders, invoices, advance shipping notices, payment orders, customs declarations, insurance claims.
Topic 5
Standardisation of EDI and e-commerce
ANSI ASC X12
American National Standards Institute
North America (e.g., 850 purchase order, 810 invoice)
UN/EDIFACT
United Nations
International trade (e.g., ORDERS, INVOIC)
TRADACOMS, ODETTE and others
Industry groups
Retail and automotive sectors
- Internet-era standards: EDI over the internet with AS2 (secure HTTP transport), XML-based formats (ebXML), and APIs using JSON; e-invoicing under GST uses a standard JSON schema submitted to the Invoice Registration Portal.
Topic 6
EDI software implementation
- 1
Application file
Order created in the buyer's ERP
- 2
Mapping
Translate internal format into the standard (X12 or EDIFACT)
- 3
Translation and envelope
Add interchange headers; validate
- 4
Communication
Send through a VAN, AS2 or SFTP
- 5
Partner side
Receive, translate back and post to their system
- 6
Acknowledgement
Functional acknowledgement (997 or CONTRL)
- Translator
- Converts between internal and standard formats
- Mapper
- Defines field correspondences
- Communications module
- Handles VANs, AS2, SFTP
- Trading partner management
- Agreements and profiles
- Audit and archiving
- Logs for compliance
Topic 7
EDI business applications
- Retail and supply chain
- Orders, shipping notices, invoices with suppliers
- Manufacturing
- Just-in-time component orders (automotive)
- Banking (financial EDI)
- Payment orders and remittance advice
- Customs and trade
- ICEGATE electronic filing of shipping bills and bills of entry
- Healthcare and insurance
- Claims and eligibility checks
- Government
- Tax returns, e-invoicing, e-way bills
Topic 8
Legal, security and privacy issues
- Legal validity
- Electronic records and signatures recognised by the IT Act, 2000
- Trading partner agreement
- Defines liability, acceptance and dispute resolution
- Authentication and integrity
- Digital signatures and message authentication
- Confidentiality
- Encryption in transit (AS2 with TLS, S/MIME)
- Non-repudiation
- Signed receipts (MDNs)
- Privacy
- Protect personal data under the DPDP Act, 2023
- Evidence and retention
- Audit trails accepted under the Bharatiya Sakshya Adhiniyam, 2023
Topic 9
E-governance in India
Identity and payments
Aadhaar, UPI, DigiLocker, e-Sign
Services
UMANG app, Common Service Centres, e-District
Taxation
GSTN, income-tax e-filing, faceless assessment
Business
MCA21, Government e-Marketplace (GeM), Udyam registration
Public delivery
Direct Benefit Transfer, PM-KISAN, ONORC
Health and education
ABHA, CoWIN, SWAYAM, DIKSHA
- Benefits: transparency, speed, lower corruption, inclusion; challenges: digital divide, privacy, cybersecurity, interoperability.
Key terms
- EDI
- Computer-to-computer exchange of business documents in standard formats
- VAN
- Value-added network carrying EDI messages
- UN/EDIFACT
- International EDI standard
- Mapping
- Translating internal data into an EDI format
- E-governance
- Using ICT to deliver government services
Quick revision
- EDI concepts and components; traditional EDI; VANs; financial EDI.
- Benefits and limitations.
- X12, EDIFACT; AS2, XML, APIs; GST e-invoicing.
- Mapping, translation, communication, acknowledgement.
- Business applications; legal, security and privacy issues; e-governance initiatives.
Important exam questions
Practice questions written to the PTU exam pattern for this unit's syllabus: short answers (Section A style) and long answers (Sections B and C style).
Short-answer questions
- Q1.Define EDI.
- Q2.What is a value-added network?
- Q3.Name two EDI standards.
- Q4.State two limitations of EDI.
- Q5.Which law gives legal validity to electronic records in India?
- Q6.Name two e-governance initiatives in India.
Long-answer questions
- Q1.Explain EDI concepts, applications and limitations.
- Q2.Explain EDI standards and software implementation.
- Q3.Explain the business applications and legal and security issues of EDI.
- Q4.Explain e-governance in India.
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