Digital Preservation Metadata for Practitioners

Abstract

6 Digital Preservation Metadata Practice for Web Archives. This book begins with an introduction to fundamental issues related to digital preservation metadata before proceeding to in-depth coverage of issues concerning its practical use and implementation. It helps readers to understand which options need to be considered in specifying a digital preservation metadata profile to ensure it matches their individual content types, technical infrastructure, and organizational needs. Further, it provides practical guidance and examples, and raises important questions. It does not provide full-fledged implementation solutions, as such solutions can, by definition, only be specific to a given preservation context. As such, the book effectively bridges the gap between the formal specifications provided in a standard, such as the PREMIS Data Dictionary ℓ́ℓ a de-facto standard that defines the core metadata required by most preservation repositories ℓ́ℓ and specific implementations. Anybody who needs to manage digital assets in any form with the intent of preserving them for an indefinite period of time will find this book a valuable resource. The PREMIS Data Dictionary provides a data model consisting of basic entities (objects, agents, events and rights) and basic properties (called ℓ́ℓsemantic unitsℓ́ℓ) that describe them. The key challenge addressed is that of determining which information one needs to keep, together with oneℓ́ℓs digital assets, so that they can be understood and used in the long-term ℓ́ℓ in other words, exactly which metadata one needs. The book will greatly benefit beginners and current practitioners alike. It is equally targeted at digital preservation repository managers and metadata analysts who are responsible for digital preservation metadata, as it is at students in Library, Information and Archival Science degree programs or related fields. Further, it can be used at the conception stage of a digital preservation system or for self-auditing an existing system. Preface; Acknowledgements; Contents; Contributors; 1 An Introduction to Implementing Digital Preservation Metadata; 1.1 Introduction; 1.2 Digital Preservation Metadata: Useful Information for Long-Term Access to Digital Objects; 1.3 Standards for Digital Preservation Metadata; 1.4 How to Develop a Digital Preservation Metadata Profile; 1.5 Reading Guide to This Book; 1.6 Conclusion; References; 2 How to Develop a Digital Preservation Metadata Profile: Risk and Requirements Analysis; 2.1 Introduction; 2.2 Why Define Requirements? 2.3 Metadata Requirements Analysis as Part of the Digital Preservation System Specification2.4 How to Get to Know Your Requirements; 2.4.1 Principles: Set Global Guidelines; 2.4.2 People: Ask the Experts; 2.4.3 Best Practice: Implement the State-of-the-Art in Digital Preservation; 2.5 Two Reference Frameworks to Get Started: OAIS Information Model, SPOT Risk Assessment Model; 2.5.1 The OAIS Information Model; 2.5.2 The Core Aspects that Mitigate Risks on Digital Objects: The SPOT Model; 2.6 Key Questions at the Level of Each Metadata Element; 2.7 Conclusion; References. 3 An Introduction to the PREMIS Data Dictionary for Digital Preservation Metadata3.1 Introduction; 3.2 The PREMIS Data Dictionary; 3.3 The PREMIS Maintenance Activity; 3.4 OAIS and PREMIS; 3.5 PREMIS Data Model; 3.6 PREMIS Goals and Principles; 3.6.1 Scope; 3.6.2 Free and Open; 3.6.3 Technical Neutrality; 3.6.4 Extensibility; 3.6.5 Degrees of Freedom; 3.7 Semantic Units; 3.8 Mapping Preservation Goals to OAIS and PREMIS Semantic Units; 3.9 Conclusion; References; 4 How to Develop a Digital Preservation Metadata Profile: Data Modeling; 4.1 Introduction. 4.2 Identifying Entities and Entity Types4.3 Describing the Entities; 4.4 Relating Entities; 4.5 Completing the Logical Data Model; 4.6 The Physical Data Model; 4.7 Customizing Data Models; 4.8 Case Studies; References; 5 Digital Preservation Metadata Practice for Audio-Visual Materials; 5.1 Introduction; 5.2 Composition of Moving Image Objects; 5.2.1 Structure; 5.2.2 Characteristics; 5.3 Use Cases; 5.3.1 Use Case 1: Describe Events and Corresponding Agents in the Process of Reformatting Physical Moving Image Material. 5.3.2 Use Case 2: Describe the Creation of Object Tiers and Their Structural Relationships5.3.3 Use Case #3: Describe Significant Properties of Digital Video Objects; 5.3.3.1 Identification and Characterization of a File Object; 5.3.3.2 Identification and Characterization of File Object and Contained Tracks as Bitstream Objects; 5.3.4 Use Case #4: Describe Rendering Environments; 5.4 Implementation Approaches and Complementary Standards; 5.4.1 Reformatting Services; 5.4.2 Libraries and Archives; 5.4.3 Broadcast Archives; 5.4.4 Fine Arts Museums; 5.5 Conclusion; References.