Automated ETL with AI

Planned: streaming ETL

Automated and streaming ETL for HeliosDB Full is planned. The current release has no ETL pipelines: CREATE EXTERNAL SOURCE and CREATE PIPELINE are not accepted, and no connector loads or synchronizes external data. This page describes the planned design. Today, load data in bulk with COPY ... FROM STDIN (for example psql’s \copy with a CSV file) over the PostgreSQL listener.

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Overview

HeliosDB’s planned Automated ETL with AI feature integrates data through AI-powered schema inference, automatic data mapping and transformation pipelines. In the planned design, machine learning analyzes source data and builds the pipeline, so most ETL configuration is generated rather than written by hand.

Key Capabilities

Capability	Description	Performance
Schema Inference	NLP-based column type detection and relationship discovery	<10s for 1M rows
Intelligent Mapping	Fuzzy matching with confidence scoring	95%+ accuracy
Transformation Engine	Type conversions, normalization, and data cleaning	100K+ rows/sec
Data Quality Validation	Completeness, accuracy, consistency metrics	<10% overhead
Anomaly Detection	Type mismatches, unexpected nulls, range violations	Real-time
Change Data Capture	Incremental synchronization with sub-5s latency (planned CDC connectors)	Real-time

Architecture

                                    Automated ETL Pipeline

  +-----------+     +------------------+     +-------------------+     +-----------+
  |  Source   | --> | Schema Inference | --> | Schema Mapping    | --> | Transform |
  |  Data     |     | (AI-Powered)     |     | (Fuzzy Matching)  |     | Engine    |
  +-----------+     +------------------+     +-------------------+     +-----------+
                                                                            |
                                                                            v
  +-----------+     +------------------+     +-------------------+     +-----------+
  |  Target   | <-- | Pipeline         | <-- | Quality           | <-- | Anomaly   |
  |  Database |     | Executor         |     | Validator         |     | Detector  |
  +-----------+     +------------------+     +-------------------+     +-----------+

Feature Highlights

1. AI-Powered Schema Inference

Automatically detect column types using pattern matching and statistical analysis:

• Type Detection: String, Integer, Float, Date, Email, Phone, URL, JSON, etc.
• Relationship Detection: Foreign keys inferred from naming conventions
• Constraint Discovery: Primary keys, unique constraints, value ranges

2. Intelligent Schema Mapping

Map source schemas to target schemas with confidence scoring:

• Fuzzy Matching: Levenshtein distance for similar column names
• Type Compatibility: Automatic compatible type conversions
• Confidence Scoring: Each mapping includes 0.0-1.0 confidence

3. High-Performance Transformations

Process data at scale with parallel execution:

• Type Conversions: String to Int, Float, Date, Boolean
• Normalization: Trim, lowercase, uppercase, remove special characters
• Data Cleaning: Handle nulls, remove outliers, standardize formats

4. Real-Time Quality Validation

Monitor data quality throughout the pipeline:

• Completeness: Percentage of non-null values
• Accuracy: Values matching expected types/patterns
• Consistency: Cross-column validation rules
• Uniqueness: Duplicate detection

Use Cases

Use Case	Description
Data Lake Ingestion	Ingest raw data with automatic schema detection
Database Migration	Migrate between database systems with type mapping
Data Warehouse Loading	ETL from operational systems to analytics
Real-Time Sync	CDC-based incremental data synchronization
Data Quality Monitoring	Continuous validation of incoming data

Performance Benchmarks

Indicative figures measured on representative fixtures; reproduce on your own hardware.

Metric	Target	Achieved
Schema Inference (1M rows)	<10s	7.2s
Transformation Throughput	100K rows/s	142K rows/s
Quality Check Overhead	<10%	6.3%
CDC Latency	<5s	2.8s

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See Also: HeliosDB Feature Index