Source of truth

As explained in Knowledge Graphs and LLMs in Action

A source of truth is an authoritative repository or representation from which consistent information is derived.

A source of truth is an authoritative representation from which consistent information is derived. Knowledge graphs consolidate distributed, heterogeneous data into one connected source for analysis, decision-making, and intelligent behavior. section 2.6 section 1.4

A reliable source-of-truth design requires:

• Merging data from multiple sources while addressing incompatible structures and identifiers. section 2.6
• Representing meaningful relationships so humans and machines can discover connections through graph pattern matching and traversal. section 1.4
• Starting from business objectives rather than importing every available dataset; otherwise, bottom-up consolidation can become costly and task-specific. section 2.6

Figure 2.13 A bottom-up approach to KG creation. It begins with importing all the data, rather than first considering the functional tasks we want to achieve.

Shows the bottom-up pipeline from importing all data toward a consolidated knowledge graph, including its task-blind starting point. section 2.6

How Knowledge Graphs and LLMs in Action covers it

How deep it goes

Defines consolidation, contrasts bottom-up and purpose-driven construction, and stops short of detailed normalization procedures.

Examples

Uses distributed data sources, heterogeneous databases, graph pattern matching, traversal, and bottom-up KG creation as examples.

What you can do after

Evaluate knowledge-graph architectures by their integration strategy, relationship representation, business alignment, and governance implications.

How it connects

Connects knowledge graphs with data integration, RDF, labeled property graphs, graph traversal, LLMs, and CRISP-DM.

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Also explained in

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  Infrastructure as Code, Patterns and Practices: With examples in Python and TerraformA source of truth is the authoritative representation against which the actual state of a system or resource is reconciled.
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  First-Party Data ActivationA single source of truth is an authoritative and consistent data source from which other systems or views derive information.
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  Automating API DeliveryA source of truth is the authoritative artifact or system whose state defines the intended state of related artifacts or systems.
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  Effective Platform EngineeringA single source of truth is one authoritative location from which a given set of values or facts is obtained.
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  Kafka for ArchitectsA source of truth is the authoritative system or record from which the canonical value of information is determined.
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  Terraform in Depth: Infrastructure as Code with Terraform and OpenTofuA source of truth is the authoritative representation against which the state of a system is evaluated and corrected.
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  Authorization in ActionA source of truth is the authoritative system or record from which the correct value of information is obtained.

Compare how 8 books explain source of truth →

Related concepts

• repositoryequivalent to · A software repository is an organized storage location or collection of project files and related artifacts, often managed with version history and change tracking.
• append-only systemequivalent to · An append-only system preserves existing data and records changes by adding new entries without modifying or removing prior entries.
• consistencyproduces · Consistency is the property of related data, behavior, outputs, or states agreeing with one another or conforming to defined rules across relevant instances or operations.
• feature storeaddressed by · A feature store is a system for managing and serving machine-learning features for use in model training and inference.

This explainer was generated by Manning's knowledge graph from the text of Knowledge Graphs and LLMs in Action. The section links point to the parts of the book it draws on.