Agentic AI Reference Architecture

Tools & Integration · Software component

Database Connector

Software componentTools & IntegrationOrchestration & Toolsarc:DatabaseConnector

A tool adapter granting direct query and update access to structured external data stores.

Responsibility. Queries and updates structured data stores for tools.

Also known as: Database tool, Database native function, Product catalog connector, Order database access

Variant of Tool Integration Adapter abstract

When to choose. Choose when the agent needs direct querying or updating of structured data stores.

is invoked byemits telemetry tois routed to byspecializeshas access controlled byreadsis cached byis guarded byis invoked byalternative todeployed onalternative toalternative toinvokeshas access controlled byTool Executor: is invoked byTool ExecutorTrace Collector: emits telemetry toTrace CollectorIntent Router: is routed to byIntent RouterTool Integration Adapter: specializesTool Integration AdapterAuthorization Policy Decision Point: has access controlled byAuthorization Policy Dec…Personal Data Store: readsPersonal Data StoreTool Result Cache: is cached byTool Result CacheExecution Rail: is guarded byExecution RailDual-Agent Critic: is invoked byDual-Agent CriticREST API Adapter: alternative toREST API AdapterService Container: deployed onService ContainerWebhook Receiver: alternative toWebhook ReceiverMessage Queue Adapter: alternative toMessage Queue AdapterConnection Pool: invokesConnection PoolUser Identity Verifier: has access controlled byUser Identity Verifier
Direct neighbourhood (hover for relationship types)

Relationships

deployed on structural

invokes dependency

is cached by dependency

is invoked by dependency

reads dependency

emits telemetry to dynamic

is routed to by dynamic

has access controlled by control

is guarded by control

alternative to variability

Design guidance

Quantitative guidance

As stated by the sources; verify before use.

Classification

Quality attributes
Performance efficiency (ISO/IEC 25010)

Sources

  1. Ch1.2: T. Nguyen, "Core Agent Patterns," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 1.2. ISBN: 9798244538229.
  2. Ch2.5: T. Nguyen, "Semantic Kernel," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 2.5. ISBN: 9798244538229.
  3. Ch3.10: T. Nguyen, "Efficiency Metrics," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 3.10. ISBN: 9798244538229.
  4. Ch4.7: T. Nguyen, "Scaling Strategies," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 4.7. ISBN: 9798244538229.
  5. Ch7.1A: T. Nguyen, "Advanced Implementation with Nvidia NEMO Framework and Nvlink," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 7.1A. ISBN: 9798244538229.
  6. Ch7.1B: T. Nguyen, "Nvidia NIM and Colang," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 7.1B. ISBN: 9798244538229.
  7. Ch8.1: T. Nguyen, "Latency Metrics," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 8.1. ISBN: 9798244538229.
  8. Ch8.2B: T. Nguyen, "NeMo Guardrails Integration," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 8.2B. ISBN: 9798244538229.
  9. Ch9.5: T. Nguyen, "Constitutional AI," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 9.5. ISBN: 9798244538229.
  10. Ch10.1: T. Nguyen, "Conversational UI," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 10.1. ISBN: 9798244538229.
  11. Ref9.01: "AI Safety Frameworks for Agent Systems," unpublished reference note (01-AI-Safety-Frameworks.md), Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam supplementary materials, 2026. unpublished note