Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API.
The Enterprise Library Common assembly contains elements that are shared among multiple application blocks. By supplying a set of commonly used functions to all the application blocks, the Common assembly reduces the dependency of one application block on another.