Core

PM Overview

TATEKAN Core

Updated: 2026-03-10 JST

TATEKAN Core is the ERP replacement center of gravity. It carries the sales-side data model, accounting linkage direction, and the downstream business logic that should not remain inside Mitsumori.

Role

Current Operating Stance

Data baseline

Cloud SQL and BigQuery are the main direction, while legacy Oracle extraction still remains part of the operational input side.

Restart prerequisite

Procedure ownership, execution checklist quality, and QA stack recovery are prerequisites before active restart.

Accounting direction

freee and accounting linkage stay centered here rather than being spread across Mitsumori or Toriteki.

UI stance

Web UI work is downstream of data and operational correctness. The core value is still the data structure and logic baseline.

Boundary With Other Apps

References