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Electronic data interchange
Electronic data interchange (EDI) is the concept of businesses electronically communicating information that was traditionally communicated on paper, such as purchase orders, advance ship notices, and invoices. Technical standards for EDI exist to facilitate parties transacting such instruments without having to make special arrangements.
EDI has existed at least since the early 1970s, and there are many EDI standards (including X12, EDIFACT, ODETTE, etc.), some of which address the needs of specific industries or regions. It also refers specifically to a family of standards. In 1996, the National Institute of Standards and Technology defined electronic data interchange as "the computer-to-computer interchange of a standardized format for data exchange. EDI implies a sequence of messages between two parties, either of whom may serve as originator or recipient. The formatted data representing the documents may be transmitted from originator to recipient via telecommunications or physically transported on electronic storage media." It distinguished mere electronic communication or data exchange, specifying that "in EDI, the usual processing of received messages is by computer only. Human intervention in the processing of a received message is typically intended only for error conditions, for quality review, and for special situations. For example, the transmission of binary or textual data is not EDI as defined here unless the data are treated as one or more data elements of an EDI message and are not normally intended for human interpretation as part of online data processing." In short, EDI can be defined as the transfer of structured data, by agreed message standards, from one computer system to another without human intervention.
Like many other early information technologies, EDI was inspired by developments in military logistics. The complexity of the 1948 Berlin airlift required the development of concepts and methods to exchange, sometimes over a 300 baud teletype modem, vast quantities of data and information about transported goods. These initial concepts later shaped the first TDCC (Transportation Data Coordinating Committee) standards in the US. Among the first integrated systems using EDI were Freight Control Systems. One such real-time system was the London Airport Cargo EDP Scheme (LACES) at Heathrow Airport, London, UK, in 1971. Implementing the direct trader input (DTI) method, it allowed forwarding agents to enter information directly into the customs processing system, reducing the time for clearance. The increase of maritime traffic and problems at customs similar to those experienced at Heathrow Airport led to the implementation of DTI systems in individual ports or groups of ports in the 1980s.
EDI provides a technical basis for automated commercial "conversations" between two entities, either internal or external. The term EDI encompasses the entire electronic data interchange process, including the transmission, message flow, document format, and software used to interpret the documents. However, EDI standards describe the rigorous format of electronic documents, and the EDI standards were designed, initially in the automotive industry, to be independent of communication and software technologies.
EDI documents generally contain the same information that would normally be found in a paper document used for the same organizational function. For example, an EDI 940 ship-from-warehouse order is used by a manufacturer to tell a warehouse to ship a product to a retailer. It typically has a 'ship-to' address, a 'bill-to' address, and a list of product numbers (usually a UPC) and quantities. Another example is the set of messages between sellers and buyers, such as request for quotation (RFQ), bid in response to RFQ, purchase order, purchase order acknowledgement, shipping notice, receiving advice, invoice, and payment advice. However, EDI is not confined to just business data related to trade but encompasses all fields such as medicine (e.g., patient records and laboratory results), transport (e.g., container and modal information), engineering and construction, etc. In some cases, EDI will be used to create a new business information flow (that was not a paper flow before). This is the case in the Advanced Shipment Notification (ASN) which was designed to inform the receiver of a shipment, the goods to be received and how the goods are packaged. This is further complemented with the shipment's use of the shipping labels containing a GS1-128 barcode referencing the shipment's tracking number.
Some major sets of EDI standards:
Many of these standards first appeared in the early to mid-1980s. The standards prescribe the formats, character sets, and data elements used in the exchange of business documents and forms. The complete X12 Document List includes all major business documents, including purchase orders and invoices.
The EDI standard prescribes mandatory and optional information for a particular document and gives the rules for the structure of the document. The standards are like building codes. Just as two kitchens can be built "to code" but look completely different, two EDI documents can follow the same standard and contain different sets of information. For example, a food company may indicate a product's expiration date while a clothing manufacturer would choose to send colour and size information.
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Electronic data interchange
Electronic data interchange (EDI) is the concept of businesses electronically communicating information that was traditionally communicated on paper, such as purchase orders, advance ship notices, and invoices. Technical standards for EDI exist to facilitate parties transacting such instruments without having to make special arrangements.
EDI has existed at least since the early 1970s, and there are many EDI standards (including X12, EDIFACT, ODETTE, etc.), some of which address the needs of specific industries or regions. It also refers specifically to a family of standards. In 1996, the National Institute of Standards and Technology defined electronic data interchange as "the computer-to-computer interchange of a standardized format for data exchange. EDI implies a sequence of messages between two parties, either of whom may serve as originator or recipient. The formatted data representing the documents may be transmitted from originator to recipient via telecommunications or physically transported on electronic storage media." It distinguished mere electronic communication or data exchange, specifying that "in EDI, the usual processing of received messages is by computer only. Human intervention in the processing of a received message is typically intended only for error conditions, for quality review, and for special situations. For example, the transmission of binary or textual data is not EDI as defined here unless the data are treated as one or more data elements of an EDI message and are not normally intended for human interpretation as part of online data processing." In short, EDI can be defined as the transfer of structured data, by agreed message standards, from one computer system to another without human intervention.
Like many other early information technologies, EDI was inspired by developments in military logistics. The complexity of the 1948 Berlin airlift required the development of concepts and methods to exchange, sometimes over a 300 baud teletype modem, vast quantities of data and information about transported goods. These initial concepts later shaped the first TDCC (Transportation Data Coordinating Committee) standards in the US. Among the first integrated systems using EDI were Freight Control Systems. One such real-time system was the London Airport Cargo EDP Scheme (LACES) at Heathrow Airport, London, UK, in 1971. Implementing the direct trader input (DTI) method, it allowed forwarding agents to enter information directly into the customs processing system, reducing the time for clearance. The increase of maritime traffic and problems at customs similar to those experienced at Heathrow Airport led to the implementation of DTI systems in individual ports or groups of ports in the 1980s.
EDI provides a technical basis for automated commercial "conversations" between two entities, either internal or external. The term EDI encompasses the entire electronic data interchange process, including the transmission, message flow, document format, and software used to interpret the documents. However, EDI standards describe the rigorous format of electronic documents, and the EDI standards were designed, initially in the automotive industry, to be independent of communication and software technologies.
EDI documents generally contain the same information that would normally be found in a paper document used for the same organizational function. For example, an EDI 940 ship-from-warehouse order is used by a manufacturer to tell a warehouse to ship a product to a retailer. It typically has a 'ship-to' address, a 'bill-to' address, and a list of product numbers (usually a UPC) and quantities. Another example is the set of messages between sellers and buyers, such as request for quotation (RFQ), bid in response to RFQ, purchase order, purchase order acknowledgement, shipping notice, receiving advice, invoice, and payment advice. However, EDI is not confined to just business data related to trade but encompasses all fields such as medicine (e.g., patient records and laboratory results), transport (e.g., container and modal information), engineering and construction, etc. In some cases, EDI will be used to create a new business information flow (that was not a paper flow before). This is the case in the Advanced Shipment Notification (ASN) which was designed to inform the receiver of a shipment, the goods to be received and how the goods are packaged. This is further complemented with the shipment's use of the shipping labels containing a GS1-128 barcode referencing the shipment's tracking number.
Some major sets of EDI standards:
Many of these standards first appeared in the early to mid-1980s. The standards prescribe the formats, character sets, and data elements used in the exchange of business documents and forms. The complete X12 Document List includes all major business documents, including purchase orders and invoices.
The EDI standard prescribes mandatory and optional information for a particular document and gives the rules for the structure of the document. The standards are like building codes. Just as two kitchens can be built "to code" but look completely different, two EDI documents can follow the same standard and contain different sets of information. For example, a food company may indicate a product's expiration date while a clothing manufacturer would choose to send colour and size information.