Digital Preservation Fundamentals

Digital Preservation Fundamentals is a key course in the Professional Certificate in Electronic Records Management. The course covers the basic concepts, theories, and practices of digital preservation. In this explanation, we will define and explain key terms and vocabulary used in the course.

1. Digital Preservation

Digital Preservation is the process of maintaining and providing access to digital materials over the long term. It involves managing the technical, administrative, and preservation metadata of digital objects to ensure their accessibility, authenticity, and usability. Digital preservation is essential for organizations and individuals to maintain the integrity and value of their digital assets.

2. Digital Objects

Digital objects are any digital files, databases, or systems that require preservation. They include documents, images, videos, audio recordings, emails, websites, and social media content. Digital objects have unique characteristics, such as being easily duplicated, altered, and deleted, which require specific preservation strategies.

3. Metadata

Metadata is structured information that describes the characteristics, context, and content of digital objects. It includes technical metadata, such as file format and size, administrative metadata, such as creation date and owner, and preservation metadata, such as migration and checksum information. Metadata is critical for digital preservation as it enables the identification, management, and preservation of digital objects.

4. File Formats

File formats are the specific way that digital information is encoded and stored. Different file formats have different preservation requirements, such as proprietary formats that may become obsolete or open formats that are more sustainable. File formats also affect the accessibility, usability, and interoperability of digital objects.

5. Authenticity

Authenticity is the assurance that digital objects are what they claim to be, and have not been altered or tampered with. Digital preservation strategies, such as checksums, digital signatures, and audit trails, are used to ensure the authenticity of digital objects.

6. Accessibility

Accessibility is the ability of users to access and use digital objects, regardless of their abilities, disabilities, or technical limitations. Digital preservation strategies, such as format migration, emulation, and access copies, are used to ensure the accessibility of digital objects.

7. Usability

Usability is the ability of users to understand and use digital objects for their intended purpose. Digital preservation strategies, such as documentation, descriptive metadata, and user testing, are used to ensure the usability of digital objects.

8. Preservation Metadata

Preservation metadata is structured information that describes the preservation activities and decisions related to digital objects. It includes information about migration, format conversion, checksums, and other preservation actions. Preservation metadata is critical for ensuring the long-term sustainability and accessibility of digital objects.

9. OAIS

OAIS (Open Archival Information System) is an international standard that provides a reference model for digital preservation. It defines the components, functions, and processes required for digital preservation, including ingest, archival storage, data management, and access. OAIS is widely used in the digital preservation community as a framework for designing and implementing digital preservation systems.

10. Trustworthy Digital Repository

A Trustworthy Digital Repository (TDR) is a repository that has demonstrated its ability to preserve digital objects over the long term. TDRs follow best practices and standards for digital preservation, such as OAIS, and undergo regular audits and certifications. TDRs provide a reliable and secure environment for the long-term preservation and access to digital objects.

11. Digital Curation

Digital curation is the active management and enhancement of digital objects throughout their lifecycle. It includes selecting, appraising, describing, preserving, and providing access to digital objects. Digital curation goes beyond digital preservation by emphasizing the value and potential of digital objects for research, teaching, and learning.

12. Emulation

Emulation is a digital preservation strategy that enables the use of old or obsolete software and hardware environments. Emulation creates a virtual environment that mimics the original hardware and software, allowing users to access and use digital objects as they were intended. Emulation is a complex and resource-intensive process, but it provides a high degree of fidelity and authenticity for digital objects.

13. Migration

Migration is a digital preservation strategy that involves converting digital objects from one format to another. Migration preserves the content and functionality of digital objects while updating their technical specifications. Migration is a common and relatively simple preservation strategy, but it may introduce errors or

changes in the digital objects.

14. Checksum

A checksum is a mathematical algorithm that generates a unique value for a digital object. Checksums are used to verify the integrity and authenticity of digital objects by comparing the original checksum with a new checksum generated after preservation activities. Checksums are an essential tool for digital preservation, as they enable the detection of errors, corruption, and tampering.

15. Audit Trail

An audit trail is a record of all the preservation activities and decisions related to digital objects. Audit trails include information about ingest, storage, access, and other preservation actions. Audit trails are used to ensure the transparency, accountability, and trustworthiness of digital preservation systems.

16. Significant Properties

Significant properties are the essential characteristics of digital objects that must be preserved to maintain their authenticity, integrity, and usability. Significant properties include content, structure, appearance, and behavior. Identifying and preserving significant properties is a critical step in digital preservation planning.

17. Preservation Planning

Preservation planning is the process of developing a strategy for the long-term preservation of digital objects. Preservation planning involves identifying the risks, challenges, and opportunities related to digital preservation, and selecting appropriate preservation strategies, such as migration, emulation, or replication. Preservation planning is an ongoing and iterative process that requires regular review and update.

18. Interoperability

Interoperability is the ability of different systems, applications, and formats to work together seamlessly. Interoperability is essential for digital preservation, as it enables the exchange, sharing, and reuse of digital objects across different platforms and environments. Interoperability is achieved through the use of common standards, protocols, and metadata.

19. Sustainability

Sustainability is the ability of digital objects to remain accessible, usable, and relevant over time. Sustainability requires the consideration of technical, economic, social, and environmental factors, such as file formats, storage media, user needs, and resource allocation. Sustainability is a critical aspect of digital preservation, as it ensures the long-term value and impact of digital objects.

20. Digital Forensics

Digital forensics is the process of collecting, analyzing, and preserving digital evidence for legal or investigative purposes. Digital forensics is a specialized field that requires expertise in computer science, law, and investigative techniques. Digital forensics is relevant to digital preservation, as it provides tools and methods for ensuring the authenticity, integrity, and reliability of digital objects.

Challenges and Opportunities

Digital preservation is a complex and challenging field that requires a deep understanding of technology, metadata, standards, and user needs. Some of the key challenges and opportunities in digital preservation include:

* Technical complexity: Digital preservation involves managing complex systems, formats, and metadata, which require specialized knowledge and skills. * Resource constraints: Digital preservation requires significant resources, including staff, equipment, and funding, which may be limited or unpredictable. * User needs and expectations: Digital preservation must balance the needs and expectations of different users, including researchers, educators, and the general public. * Ethical and legal issues: Digital preservation raises ethical and legal issues related to privacy, intellectual property, and cultural heritage, which require careful consideration and negotiation. * Innovation and experimentation: Digital preservation is a rapidly evolving field that requires continuous innovation and experimentation to keep up with technological changes and user needs.

Conclusion

Digital preservation is a critical component of electronic records management, as it ensures the long-term accessibility, authenticity, and usability of digital objects. Digital preservation involves managing technical, administrative, and preservation metadata, as well as selecting appropriate preservation strategies, such as migration, emulation, or replication. Digital preservation requires a deep understanding of file formats, metadata, standards, and user needs, as well as specialized knowledge and skills. Despite the challenges and complexities, digital preservation offers significant opportunities for innovation, collaboration, and impact, and is essential for maintaining the integrity and value of our digital heritage.