"ETL tools move data; ARCXA makes SQL Data Migration Explainable and Repeatable".
Arcxa sits above your existing stack, as a mapping intelligence layer that captures; semantic meaning, transformation lineage, and reusable ontologies across every migration you run."
Equitus ARCXA develops a Semantic Control Plane (SCP), which abstracts business logic out of static procedural scripts into an ontology-driven Knowledge Graph (Subject-Predicate-Object (SPO) RDF triples architecture), this document will explore how Arcxa is used to Execute Inner - Inter System migration engineering and readiness assessments.
Equitus ARCXA—the Migration Readiness Assessment (MRA) phase establishes control, maps legacy complexity, and quantifies migration risks before moving data.
When conducting a Migration Readiness Assessment within ARCXA's framework, initial steps center around deploying its Semantic Control Plane (SCP) and leveraging triple-store technology to evaluate legacy infrastructure (SAP, Oracle, DB2) prior to moving to target cloud platforms (Databricks, Snowflake).
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1. Control Layer Setup & Non-Disruptive Integration - Mapping Automation builds allows for data migration to occur with a plan.
Deploy the Control Plane: Initialize the ARCXA Coordinator and Shard infrastructure alongside existing governance tools (such as Collibra, Informatica, or Fivetran).
Attach Read-Only Connectors: Connect non-disruptive, read-only connectors to legacy source endpoints (RDBMS, enterprise ERPs) as well as target cloud destinations.
Ingest Policy Boundaries: Import metadata and catalog rules directly from legacy governance systems to ensure compliance constraints stay intact throughout the migration cycle.
2. Discovery, SQL Log Parsing & Behavioral Ingestion-
Capture Execution Histories: Move beyond static DDL/schema documentation by parsing active DML logs, SQL execution histories, and store procedures to analyze actual runtime data usage.
Profile Source Code & Embedded Logic: Identify non-standard SQL constructs, embedded application code (such as ESQL or stored procedures), and dialect mismatches (PL/SQL vs. target cloud dialect).
Run Field Profiling: Scan fields, views, data types, and structural dependencies automatically across the entire source landscape.
3. Triple-Store Ontology Alignment & Semantic Mapping
Construct Knowledge Graph: Normalize procedural SQL across disparate systems into a unified Subject-Predicate-Object (SPO) intermediate Knowledge Graph.
Infer Business Semantics: Combine statistical pattern matching and semantic AI model inference to map technical column names (e.g.,
CUST_LNAME_V2) directly to domain terms (:Customer :hasLastName).Baseline Lineage & Quality: Trace rule-level lineage to detect data-truncation risks, null-handling discrepancies, or join anomalies before generating automated migration pipelines.
4. Semantic Risk Scoring & Complexity Bucketing: The application of Subject-Predicate-Object (SPO) systems to predicate migration costs based on Legacy Data;
Arcxa Classifies workloads into risk tiers to dictate wave planning and refactoring strategies:
Green Tier: Direct, automated schema and query mapping suitable for simple pipelines.
Amber Tier: Requires guided semantic refactoring or manual adjustment due to dialect/procedural gaps.
Red Tier: Highly complex or decoupled legacy debt requiring virtualization or architectural redesign.
5. Economic Modeling & Scope Optimization
Simulate Compute & Egress Costs: Dry-run workloads to model target cloud compute usage and prevent unexpected data egress fees during validation/reconciliation runs.
Define Project Timeline & ROI: Map complexity tiers to actionable migration waves, providing precise cost estimates and effort timelines derived from structural complexity rather than generic estimates.
Spin up the ARCXA Docker binary locally or on-premise.
Connect native read-only drivers to source databases (e.g., SAP, DB2, Oracle) and target platforms (Databricks, Snowflake) without altering production pipelines Execute ARCXA automated profiling across tables, views, DDLs, and active DML execution logs.
The engine applies statistical pattern matching and semantic AI to infer underlying business meanings (assigning semantic types to cryptic column names). Construct SPO knowledge graph & baseline lineage:
Parse procedural logic, stored procedures, and queries into a Subject-Predicate-Object (SPO) graph.
This establishes rule-level lineage and captures functional relationships independently of SQL dialects. Run dry-runs & complexity bucketing:
Assess workloads against semantic risk policies to bucket SQL pipelines into Green (direct automated translation), Amber (guided semantic refactoring), and Red (heavy architectural refactoring) waves.
Separating SQL migration into Inner-System and Inter-System scopes is critical for controlling scope, sequencing execution waves, and ensuring functional equivalence.
Equitus ARCXA relies on its Semantic Control Plane (SCP), which abstracts business logic out of static procedural scripts into an ontology-driven Knowledge Graph (SPO RDF triples)
Equitus ARCXA relies on its Semantic Control Plane (SCP), which abstracts business logic out of static procedural scripts into an ontology-driven Knowledge Graph (SPO RDF triples).Initial Steps for ARCXA Migration Engineering & Readiness Assessment
Deploy local/edge container & establish connectors:
Spin up the ARCXA Docker binary locally or on-premise.
Connect native read-only drivers to source databases (e.g., SAP, DB2, Oracle) and target platforms (Databricks, Snowflake) without altering production pipelines. Automated metadata profiling & semantic typing:
Execute ARCXA automated profiling across tables, views, DDLs, and active DML execution logs.
The engine applies statistical pattern matching and semantic AI to infer underlying business meanings (assigning semantic types to cryptic column names). Construct SPO knowledge graph & baseline lineage:
Parse procedural logic, stored procedures, and queries into a Subject-Predicate-Object (SPO) graph.
This establishes rule-level lineage and captures functional relationships independently of SQL dialects. Run dry-runs & complexity bucketing:
Assess workloads against semantic risk policies to bucket SQL pipelines into Green (direct automated translation), Amber (guided semantic refactoring), and Red (heavy architectural refactoring) waves.
Differentiating Inner-System vs. Inter-System SQL Migration
Arcxa Separates SQL migration into Inner/ Inter-System scopes is critical for controlling scope, sequencing execution waves, and ensuring functional equivalence. ARCXA handles each through distinct abstraction mechanisms:
ARCXA handles each through distinct abstraction mechanisms:
How to Separate Inner / Inter in Practice:
Parse & Tag Dependencies:
During initial log ingestion, ARCXA tags every query AST (Abstract Syntax Tree). Queries referencing only local schemas/tables are tagged
Inner-System, while queries utilizing linked servers, cross-database DB links, or external stage files are taggedInter-System.Isolate Inner-System Batches:
Migrate inner-system logic first to ensure the core local transformations compile and execute deterministically in the target environment.
Bind Inter-System Logic to the Central Ontology:
Instead of rewriting complex multi-system joins manually, use ARCXA’s Semantic Layer to decouple external endpoints.
Both source and target speak to the shared ontology graph, allowing inter-system connections to cut over seamlessly without breaking external consumers.





