Architecture — Layer 03 of 07

Data

How information is structured, owned and trusted.

The Data layer designs what data means, who owns it, and which system holds the authoritative record.

Data layer schematic
Principles

The design rules for this layer.

01

Authoritative Single System of Record

Each core entity (Customer, Order, SKU, Contract) has exactly one source of truth. All other systems subscribe as read-replicas.

02

Continuous Automated Reconciliation

Data integrity is enforced continuously at system boundaries via cryptographic hash checks and automated checksum audits.

03

Immutable Lifecycle Lineage

Financial, inventory, and lifecycle records are stored in append-only streams with complete provenance and audit history.

Deliverables

What we produce for this layer.

01

Master Data Governance Matrix

Domain ownership map establishing authoritative system boundaries and write-permissions for every corporate entity.

02

Canonical Enterprise Data Dictionary

Standardized entity definitions, field formats, and validation rules shared across all operational systems.

03

Zero-Loss Replication Pipeline Specs

High-throughput synchronization protocols between core transactional databases and analytical engines.

04

Data Retention & Compliance Architecture

Automated retention and cryptographic purge policies compliant with GDPR, KVKK, and regulatory standards.

Current vs designed

What changes when this layer is designed.

Current state
  • The same entity defined differently in five systems
  • No agreement on which system is the source of truth
  • Data reconciled manually, after the fact
Designed state
  • A single, agreed definition for every core entity
  • Clear ownership of every data domain
  • Systems that reference one source of truth
Works With Your Systems

Designed to work with the enterprise systems you already use.

ACHORD does not replace the systems you already paid for. We design how SAP, Oracle, Microsoft Dynamics, Salesforce and your custom applications exchange data, reconcile it, and hand off decisions.

All seven layers