#PhoenixmlDb

PhoenixmlDb is a modern, cross-platform embedded XML/JSON document database for .NET. A spiritual successor to Oracle Berkeley DB XML, it provides native document storage with the full power of XQuery 4.0 and XSLT 4.0.

#Core Features

• Native XML and JSON storage with the XQuery Data Model (XDM)

• Full XQuery 3.1/4.0 and XSLT 3.0/4.0 — custom engine, no Saxon dependency

• ACID transactions with MVCC via LMDB

• Rich indexing — path, value, full-text, structural, name, and metadata

• Unlimited metadata — namespace-key-value pairs on every document

• Embeddable to distributed — single-process to multi-node cluster

#Documentation

• Core Concepts — Containers, documents, the XDM, shredded storage

• Documents & Storage — Storing and retrieving XML and JSON

• JSON Support — JSON storage, queries, and indexing

• Indexing — All index types and optimization strategies

• Transactions — ACID guarantees, MVCC, and transaction patterns

• Deployment — Embedded, server, and cluster modes

• API Reference — Interfaces, classes, and patterns