Cayley is an open-source graph inspired by the graph database behind Freebase and Google's Knowledge Graph.

Features 

• Community driven
• Written in Go
  • can be used as a Go library
• Easy to get running (3 or 4 commands)
• RESTful API
  • or a REPL if you prefer
• Built-in query editor and visualizer
• Multiple query languages:
  • Gizmo - a JavaScript, with a Gremlin-inspired* graph object.
  • GraphQL-inspired* query language.
  • (simplified) MQL, for Freebase fans
• Plays well with multiple backend stores:
  • KVs: Bolt, LevelDB
  • NoSQL: MongoDB, ElasticSearch, CouchDB/PouchDB
  • SQL: PostgreSQL, CockroachDB, MySQL
  • In-memory, ephemeral
• Modular design; easy to extend with new languages and backends
• Good test coverage
• Speed, where possible. 

Stairway to XML

XML has been part of the SQL Standard since 2003, and is essential for any DBA because so many of the dynamic management views return XML data. Now that the industry is more used to data defined by document markup, it is becoming more important than ever for Database Developers and DBAs to understand the technology and to know where it makes sense to use XML. In this book, originally a series of articles on SQLServerCentral.com, Robert Sheldon flexes his talent to make the complicated seem simple. 

Tetris-SQL

A complete implementation of Tetris in a SQL query.

Transact-SQL The Building Blocks to SQL Server Programming
Published by Redgate, First Edition 2020 

Library Written in C# For Parsing SQL Server T-SQL Scripts in .Net 

Run SQL in your browser...

Supports Postgres, MySQL, SQL Server, Vertica, Crate, and Presto

SQL CLR
Native XML Web Services
In-Memory OLTP
Active Directory Helper Service
SQL Mail