On-Prem Migration with OCR-Enhanced RAG Search

Scenario

A team migrates their on-premises database—including structured records and references to scanned documents—to Alibaba Cloud by staging backups in OSS and importing into RDS/OceanBase, then processes the migrated scanned documents (PDFs, images) through Bailian OCR for text extraction, generates vector embeddings via OpenSearch, and indexes everything into Elasticsearch for unified hybrid keyword-and-vector search across both structured and unstructured data.

How the products combine

1. es+oss · hybrid-vector-keyword-search-system-3cb028 — Hybrid Vector + Keyword Search System

See _combos/hybrid-vector-keyword-search-system-3cb028.

2. es+opensearch+oss · vector-search-rag-pipeline-on-alibaba-cloud-96d675 — Vector Search RAG Pipeline on Alibaba Cloud

See _combos/vector-search-rag-pipeline-on-alibaba-cloud-96d675.

3. ecs+ecs+rds+es+rds+es+rds+oceanbase+rds+oss+rds+rds+oceanbase+rds+oss+rds+es+rds+oceanbase+rds+oss+rds+rds+es+opensearch+oss+es+rds+es+supabase+es+rds+es+rds+oceanbase+rds+oss+rds+rds · on-prem-db-migration-to-full-stack-search-applic-25dd1c — On-Prem DB Migration to Full-Stack Search Application

See _combos/on-prem-db-migration-to-full-stack-search-applic-25dd1c.

4. airec+opensearch+es+opensearch+oss+es+oss+opensearch+airec+opensearch+es+opensearch+oss+es+oss+opensearch+airec+opensearch+es+opensearch+oss+es+oss+opensearch+bailian+bailian+es+bailian+es+airec+opensearch+es+opensearch+oss+es+oss+opensearch+bailian+bailian+es+bailian+es+es+es+opensearch+oss+es+oss+bailian+es+bailian+es+es+es+opensearch+oss+es+oss+es+opensearch+oss · ocr-enhanced-hybrid-rag-pipeline-f952fd — OCR-Enhanced Hybrid RAG Pipeline

See _combos/ocr-enhanced-hybrid-rag-pipeline-f952fd.

Typical questions

• migrate on-prem DB with scanned documents and build RAG search
• full migration pipeline including OCR document processing
• on-prem to cloud with hybrid search over structured and scanned data
• migrate database then OCR and index all documents
• 本地数据库迁移加OCR文档处理构建混合搜索
• 从本地迁移到云端并对扫描文档做语义检索
• end-to-end migration with document understanding and vector search
• database migration plus scanned PDF to searchable RAG system

Q: How do I migrate an on-premises database containing scanned documents to build a hybrid RAG search system? A: You can migrate your on-premises database and scanned documents to Alibaba Cloud by staging backups in OSS, importing them into RDS or OceanBase, and processing the documents through Bailian OCR for text extraction. The extracted text is converted into vector embeddings via OpenSearch and indexed alongside your structured records in Elasticsearch. This setup enables unified hybrid keyword-and-vector search across both your structured data and unstructured scanned documents.