Data Lake → KNIME Workflows

Interactive KNIME Workflow Blueprints

Click any node to see its detailed configuration in a side panel. Each workflow includes a toggleable SQL alternative for use in DB Query Reader nodes. Designed for KNIME LTS 5.8.2 with KNIME Business Hub (Standard Edition).

Database nodes = server-side processingGroupBy before Join = no explosionZX_LINES = single source of truth

1. VAT Return Data Extraction

Extract and aggregate all tax data for a specific entity and period. Uses DB nodes for server-side processing — only the small aggregated result is loaded into KNIME.

DB Table Selector / ReaderRow FilterGroupByProcessingOutput← click any node for details

2. E-Invoice Status Dashboard

Monitor e-invoice submission success/failure rates by country. Includes error analysis branch for troubleshooting. Two outputs: dashboard matrix and error detail.

↕ Click nodes for connection details
DB Table Selector / ReaderGroupByProcessingOutputRow Filter← click any node for details

3. Reverse Charge Transaction Monitor

Pull all reverse charge (self-assessed) transactions from ZX_LINES, enrich with supplier details, and summarize by entity and jurisdiction.

DB Table Selector / ReaderGroupByJoinerOutput← click any node for details

4. Intercompany CIT Flow Analysis

Extract GL journal entries involving intercompany accounts, aggregate by entity pair, and produce a transfer pricing matrix.

DB Table Selector / ReaderGroupByMath Formula / Rule EngineProcessingOutput← click any node for details

5. Tax Data Quality Monitor

Flag anomalies in tax data: missing rates, negative tax on non-reverse-charge lines, zero tax on non-exempt items, rates above maximum known threshold.

DB Table Selector / ReaderMath Formula / Rule EngineRow SplitterGroupByOutput← click any node for details

KNIME Business Hub Configuration

Scheduling on Business Hub

  • Daily: Data Quality Monitor, E-Invoice Dashboard
  • Weekly: Reverse Charge Monitor, Supplier VAT Validation
  • Monthly: VAT Return Extraction, IC CIT Analysis
  • Ad-hoc: Rate Change Impact Simulator

Flow Variable Best Practices

  • • Use Configuration nodes at workflow start for all parameters
  • Credentials node for DB passwords (never hardcode)
  • Date&Time Configuration for period selection
  • String Configuration for entity/regime selection