Egeria - Open Metadata and Governance
Every week we hear of new tools, data platforms and opportunities for organizations to embrace advanced digital technologies such as artificial intelligence. Yet despite investment and the focus of smart people, few organizations succeed in making wide and systematic use of their data.
Today’s IT is at the heart of the problem. Many tools and data platforms recognize the value of metadata, but manage it in a siloed, proprietary way that assumes they are the only technology employed by the organization. The result is that knowledge is not shared between people that use different tool sets.
ODPi Egeria is an open source project dedicated to making metadata open and automatically exchanged between tools and data platforms, no matter which vendor they come from.
We believe in the open metadata and governance manifesto:
- The maintenance of metadata must be automated to scale to the sheer volumes and variety of data involved in modern business. Similarly the use of metadata should be used to drive the governance of data and create a business friendly logical interface to the data landscape.
- The availability of metadata management must become ubiquitous in cloud platforms and large data platforms, such as Apache Hadoop so that the processing engines on these platforms can rely on its availability and build capability around it.
- Metadata access must become open and remotely accessible so that tools from different vendors can work with metadata located on different platforms. This implies unique identifiers for metadata elements, some level of standardization in the types and formats for metadata and standard interfaces for manipulating metadata.
- Wherever possible, discovery and maintenance of metadata has to an integral part of all tools that access, change and move information.
We also believe that code talks. Egeria provides an Apache 2.0 licensed platform to support vendors that sign up to the open metadata and governance manifesto.
Figure 1 shows Egeria in action. Today’s organizations have their tools and technologies distributed across multiple data centres and cloud providers. These are shown as the green clouds. The Egeria Open Metadata and Governance (OMAG) Server Platform (blue rounded box) is deployed in each location. Each platform is then configured to run different types of integration services that are tailored to support specific types of tools (see orange circles). The Egeria services also manage the exchange of metadata between the platforms.
The Egeria open metadata and governance technology provides an open metadata type system, frameworks, connectors, APIs, event payloads and interchange protocols to enable tools, engines and platforms to exchange metadata in order to get the best value from data and tools for a wide range of use cases.
If you are interested in getting started with Egeria, try our tutorials. They show people with different roles in a fictitious organization called Coco Pharmaceuticals making use of different capabilities from Egeria.
Alternatively read on for more information.
The guides provide step-by-step guidance on a specific aspect of working with Egeria.
Egeria Planning Guide - provides guidance on how to deploy Egeria in your organization. It will help you decide on which components of Egeria to use, where they should be located and how they need to be configured.
Egeria Administration Guide - describes how to configure and operate Egeria to support the integration of different types of technologies.
Egeria Developer Guide - describes how to use Java classes called connectors to extend Egeria to exchange metadata with new types of technology and add new capabilities. It also covers the APIs and Event Topics used by applications to save and retrieve metadata from Egeria.
Egeria Diagnostic Guide - describes the different types of diagnostics produced by Egeria and how to use them.
Open Metadata Conformance Test Suite Guide - describes how to run the Open Metadata Conformance Test Suite to validate that a technology is compliant with the open metadata specifications.
If you would like to browse to see what is available then these pages may be of interest.
- Egeria Open Metadata Types - describes the scope and usage of metadata supported by Egeria “out of the box”.
- Egeria Glossary - provides definitions to terms used in the Egeria project.
- Egeria Module Organization - defines the hierarchical structure of the modules in the Egeria project.
The following articles may answer additional questions that you have.
- Where is the code? - link to GitHub.
- Who is contributing? - see the project activity.
- How do I join the mailing list? - go to the sign up page.
- What is the ODPi? - visit their website.
- Why is the project called Egeria? - understand the background of the project.
- What are the goals of Egeria? - understand the motivation behind this project and its key components.
- How do I run Egeria? - try our getting started tutorials and labs.
- Where is the design documentation? - dig deeper into the code.
- Where are the open metadata specifications? - learn how Egeria is both supporting ant providing standards.
- How do I raise a bug or feature request? - create a GitHub Issue to get help.
- How do I integrate my metadata repository into the open metadata ecosystem? - understand the options.
- How do I test that a technology is conformant with the open metadata specifications? - learn how to run the conformance suite.
- How is the egeria project content organized? - see the site structure.
- How do I find out more about Data Governance? - link to our guidance on governance.
ODPi Egeria project governance
This project is maintained by the ODPi Egeria community. To understand how to join and contribute see the Community Guide.
We aim to operate in a transparent, accessible way for the benefit of the Egeria community. All participation in this project is therefore open and not bound to any corporate affiliation nor membership of the ODPi. Participants are only required to follow the ODPi’s Code of Conduct.
The governance of the project is described in more detail in the Egeria Operations.
License: CC BY 4.0, Copyright Contributors to the ODPi Egeria project.