The Merret source adaptor provides extraction patterns for legacy Merret retail ERP systems. It covers merchandise, inventory, pricing, supplier, and transaction data with transformation templates for Oracle Retail, D365, and other target platforms. Deterministic validators ensure data completeness and integrity before migration.
What it accelerates
- Prototype speed: pre-built extraction patterns for core Merret modules reduce time-to-first-prototype significantly
- Data completeness: extraction templates cover all major Merret data domains including merchandise, inventory, and transactions
- Transformation ready: mapping templates handle Merret-to-target transformations for Oracle Retail, D365, and other systems
- Audit-ready evidence: reconciliation packs with counts, totals, and balancing produced automatically
- Knowledge retention: delivery logic sits in the adaptor, not in individuals, reducing key-person dependency
See it in practice
Real-world implementations using this adaptor:
12-month parallel run, 8 flawless cutovers, zero rollbacks
To de-risk an Oracle Retail rollout, a £4 billion UK e-commerce retailer printed temporary integrations using elfware's Enterprise Low Code and Data Patterns. The approach sustained dual-platform alignment for a full year across eight phased cutovers, achieving zero data reconciliation issues.
Data prototypes in 3 weeks; momentum for workshops
We moved a UK fashion e-commerce retailer to Oracle Retail MOM with a 3-week fixed-price prototype covering 50+ core tables. We then evolved 12 major data footprints, embedded end-to-end reconciliation and data quality, and enabled scenario cuts across 20+ environments.
How it works with elfware
The controlled non-determinism model applied to Merret:
- 1Human decisions: consultants define scope, modules, business rules, and exception handling for the Merret estate
- 2AI-assisted optioning: surfaces extraction choices and highlights gaps in data coverage
- 3Governed specs: locked decisions become the input to deterministic generation
- 4Deterministic generation: code-printing produces extraction scripts, transformation logic, and orchestration from the governed spec
- 5Deterministic validators: every row, every field checked against governed rules before migration
- 6Rehearsal and cutover: proven rehearsal chain executed identically each run until go-live
AI boundary: AI never processes customer data; it supports mapping and delivery configuration only. When AI assists with code generation, the output is reviewed, QA'd, and verified in test runs before deployment to any system.
Source vs target usage
As a source (Merret ERP)
Extraction from Merret retail ERP systems for migration to modern platforms. Covers full and delta extraction patterns across all major data domains.
- Merchandise data: items, hierarchies, attributes, suppliers, cost components
- Pricing data: price lists, promotions, markdowns, price zones
- Inventory data: stock on hand, locations, transfers, receipts
- Supplier data: suppliers, addresses, contacts, payment terms
- Transaction data: sales, returns, receipts, adjustments
- History extraction: progressive history builds with effective dating
Case Studies: As a source
2 studies12-month parallel run, 8 flawless cutovers, zero rollbacks
To de-risk an Oracle Retail rollout, a £4 billion UK e-commerce retailer printed temporary integrations using elfware's Enterprise Low Code and Data Patterns. The approach sustained dual-platform alignment for a full year across eight phased cutovers, achieving zero data reconciliation issues.
Data prototypes in 3 weeks; momentum for workshops
We moved a UK fashion e-commerce retailer to Oracle Retail MOM with a 3-week fixed-price prototype covering 50+ core tables. We then evolved 12 major data footprints, embedded end-to-end reconciliation and data quality, and enabled scenario cuts across 20+ environments.
Typical artefacts delivered
Extraction patterns
Pre-built queries and extraction logic covering Merret data domains with filtering, transformation, and exception handling.
Mapping templates
Source-to-target mapping documents covering Merret entities with transformation rules for Oracle Retail, D365, and other targets.
Orchestration / run groups
Sequenced run plans ensuring dependencies between data domains are respected.
Deterministic validators
Automated checks for data completeness, referential integrity, and business rule compliance.
Reconciliation / evidence pack
Counts, totals, deltas, and balancing reports for audit-ready sign-off.
Interfaces and data domains
| Domain | Typical entities | Cadence | Notes |
|---|---|---|---|
| Products | Items, hierarchies, attributes, item/supplier relationships | Full + delta | Hierarchy completeness required |
| Locations | Stores, warehouses, location attributes | Full | Location hierarchy dependency |
| Suppliers | Suppliers, addresses, contacts, payment terms | Full + delta | Active suppliers with valid terms |
| Pricing | Price lists, promotions, markdowns | Full + delta | Effective dating critical |
| Inventory | Stock on hand, transfers, receipts | Snapshot + delta | Cutover timing dependent |
| Transactions | Sales, returns, receipts, adjustments | History + delta | Progressive history builds |
Common risks and how we mitigate them
Schema differences between Merret versions
Version-aware extraction patterns adapt to schema differences automatically.
Data quality issues in legacy system
Pre-extraction validators identify and report data quality issues before migration begins.
Complex merchandise hierarchies
Hierarchy extraction patterns handle multi-level structures with validation of parent-child relationships.
Historical data volume
Progressive history build patterns load data in manageable tranches with checkpoint/restart capability.
Cutover timing coordination
Rehearsal playbook provides accurate timing data for confident go/no-go decisions.
Frequently asked questions
What Merret versions do you support?
How long to first prototype?
Can you extract historical data?
What target systems do you support?
How do you handle Merret-specific data structures?
Ready to de-risk your migration?
Same-day response (Mon-Fri)