GB/T 27926.5-2021Financial services - Universal financial industry message scheme - Part 5: Reverse engineering (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document is part 5 of GB/T 27926 "General Messaging Plan for Financial Services and Financial Industry". GB/T 27926 has been released The following parts.

---Part 1: Metamodel;

---Part 2: Overview of UML;

---Part 3: Modeling Guidelines;

---Part 4: XMLSchema generation;

---Part 5: Reverse Engineering;

---Part 6: Message transmission characteristics;

---Part 7: Registration;

---Part 8: ASN.1 generation.

This document replaces GB/T 27926.5-2011 ``Financial Services Financial Industry General Messaging Scheme Part 5: Reverse Engineering'', and Compared with GB/T 27926.5-2011, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) Added the expression of the element "General Principles" in Chapter 4 "Activities and Delivery Contents" (see 4.1);

b) The description of the element "General Principles" in Chapter 5 "Workflow" has been added (see 5.1).

The translation method used in this document is equivalent to the adoption of ISO 20022-5:2013 ``Financial Services and Financial Industry General Messaging Program Part 5: Reverse project".

The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows.

---GB/T 27926.1-2021 General Messaging Scheme for Financial Services and Financial Industry Part 1: Metamodel (ISO 20022-1:2013, IDT)

This document has made the following editorial changes.

---Adjust the errata in the English original edition (see 5.5.2.3.1, 5.5.2.3.2).

Introduction

GB/T 27926 defines a scalable and systematic process to ensure the consistency of message descriptions in the entire financial industry. The purpose is fine Describe the externally observable method of message delivery in the financial industry accurately and completely. This method can be independently verified with running message delivery.

The production of ISO 20022 is based on open technical standards. Usually, the development speed of technical standards is faster than the industry itself. because Therefore, the document adopts a model-driven approach, in which the industry message collection model can be independently separated from the development of message technology.

ISO 20022 emerged with the widespread commercial adoption of the World Wide Web. Extensible Markup Language (XML) in the form of document representation on the Web The de facto standard appeared and became the first grammar of ISO 20022.

GB/T 27926 consists of the following parts.

---Part 1: Metamodel;

---Part 2: Overview of UML;

---Part 3: Modeling Guidelines;

---Part 4: XMLSchema generation;

---Part 5: Reverse Engineering;

---Part 6: Message transmission characteristics;

---Part 7: Registration;

---Part 8: ASN.1 generation.

Compared with GB/T 29726-2011, 5 parts were revised and 3 parts were added. The new parts are.

---Part 2: Overview of UML;

---Part 6: Message transmission characteristics;

---Part 8: ASN.1 generation.

8 parts of GB/T 27926-2021 "General Message Scheme for Financial Services and Financial Industry" are equivalent to 8 parts of ISO 20022-2013 part.

In addition to the message technical standards, the modeling process is further refined into three layers, which is why this document is based on four layers. scope layer, concept Layer, logical layer and physical layer. The first, second and third layers are described in the Unified Modeling Language (UML) because it has been widely used Support and support multiple layers of abstraction. The models created from this document are technology-independent, as they do not require any specific physical tables Express or achieve. These models are designed to describe all parts of the message exchange and constitute the definition of the agreement between the participants in the message exchange. This article The software defines a method that describes the process by which modelers create and maintain these models.

ISO 20022 aims to build a standardized and complete message development plan to improve the efficiency of information exchange and development in the financial industry and reduce message movement.

The maintenance cost of the bank is planned to be composed of the following parts.

---Part 1: Metamodel. The meta-models of all models and libraries are described in the Meta Object Tool (MOF), the purpose is to introduce the modeling method Method summary, summary of library content, abstract description of the input and output of the library acceptable to the registrar.

---Part 2: Overview of UML. Covers UML profile, the basis of a general UML, which is a special feature defined by this standard Subset (used when UML is selected to define the model). The purpose is to describe the definition, overall structure, and meta-model of the extension set.

From layer to UML implementation, the metaclass attributes involved in the total, so that message developers can better understand the UML extension set and its various levels UML implementation.

---Part 3: Modeling Guidelines. Describes the modeling method used to generate the model for this document. The purpose is to explain the message model to the modeler The steps of model establishment ensure the consistency of business components/elements, message components/elements, business transactions and message definitions. This part It is aimed at the concrete realization of the business of modeling in Part 1 and Part 2.

---Part 4: XMLSchema generation. The purpose is to introduce XMLSchema generation rules, which are used to transform the logical layer model It is the physical layer of the grammar description.

---Part 5: Reverse Engineering. Covers logical model alignment and reverse engineering of existing message syntax. The purpose is to introduce reverse engineering The main stages in the process and the inputs, outputs and activities of each stage.

---Part 6: Message transmission characteristics. The purpose is to introduce the parameters of the message transmission system required for business transactions and message definitions.

Confirm the parameter difference in different transmission modes of the message.

---Part 7: Registration. Describes the process of management model registration and physical grammar realization. The purpose is to indicate the applicant institution and registration Responsibilities and registration process of both parties.

---Part 8: ASN.1 generation. This part gives the ASN.1 grammar generation rules, so that the logical layer model can be integrated through ASN.1 Converted to physical layer description.

1 Scope

As a supplement to ISO 20022-1, this document gives guidance on how to extract relevant information from the existing industry The ISO 20022 registration agency submits business transactions and message collections that comply with ISO 20022.

The ISO 20022 library given in ISO 20022-1 will contain all business transactions and message collections that comply with ISO 20022.

The methods to be followed in the addition of ISO 20022 business transactions and message collections to the library can be divided into the following situations.

a) Case 1.

---There are no business transactions and message collections that comply with ISO 20022;

---There is no industry newsletter;

Example 1. Collective investment tools.

---Method. Use ISO 20022-3 to newly develop business transactions and message collections that comply with ISO 20022.

b) Case 2.

---There are no business transactions and message collections that comply with ISO 20022;

---There are one or more industry newsletters;

Example 2. Before securities trading (the FIX message set exists).

---Method. Use ISO 20022-5 to transform the industry message collection into ISO 20022 business transaction and message collection.

c) Case 3.

--- There are business transactions and message collections that comply with ISO 20022;

---There are also one or more existing industry newsletters;

Example 3. After securities trading (there is FIX, Omgeo message collection).

---Method. Use ISO 20022-5 to compare existing industry message collections with business transactions and message collections that comply with ISO 20022 In contrast, if necessary, expand the business transaction and message set in accordance with ISO 20022.

This document describes the activities of ISO 20022 reverse engineering from a user perspective. These users want to verify the Business functions are also covered by business transactions and message collections that comply with ISO 20022. This document does not attempt to define "party Theory of Law".

This document describes the following necessary set of activities.

a) Extract relevant information from the existing industry message collection and compare it with the relevant information in the ISO 20022 library;

b) Use the results of the above comparison in the development of business transactions and message collections that comply with ISO 20022;

c) Submit the resulting change application to the registration agency;

Note: The purpose of reverse engineering is not to systematically generate ISO 20022-compliant versions of all existing industry collections. The change request needs to be based on a Effective proof of business rationality.

d) Prepare for the migration to ISO 20022-compliant business transactions and message collections.

The main objectives of this document are as follows.

---Capture the industry knowledge contained in the existing industry message set;

---Based on the existing standardization achievements in the industry, construct business transactions and message collections that comply with ISO 20022;

---Ensure that the final business transaction and message collection in compliance with ISO 20022 completely cover the business scope of the existing industry message collection;

---Maximize the interoperability between existing industry message collections and business transactions and message collections that comply with ISO 20022;