Reference
Microsoft SQL documentation.NET data documentation
.NET is the open source and cross-platform solution for integrating data, data services, and data backends with your applications.
Reference
Azure Cosmos DB documentationOverview
LINQ overviewOverview
Entity Framework Core (Overview)Training
Entity Framework Core (Tutorial)Overview
SQLite overviewOverview
What is ML.NET?Overview
What is .NET for Apache Spark?Databases
Graph database (Azure Cosmos DB Graph API)
Distributed key/value databases and cache
Data services
Language Integrated Query (LINQ)
Machine learning
APIs
CoreWCF