This document discusses Entity Framework Core, including that it was rewritten from scratch, the supported database providers and engines, comparisons to Entity Framework 6 and Dapper, and demonstrations of GroupBy queries and performance comparisons between EF Core and Dapper. Key points include EF Core supporting many database engines like SQL Server, SQLite, PostgreSQL and more via NuGet packages, differences between EF Core and EF 6, and demonstrations of EF Core and Dapper queries and performance.

1. RAFAEL ALMEIDA
VISUAL STUDIO AND DEVELOPMENT
TECHNOLOGIES
RALMS@RALMS.NET
EF CORE NÃO É
LENTO VOU TE
PROVAR!
#VSSUMMIT

2. CONSTRUÇÃODOENTITY
FRAMEWORKCORE
#VSSUMMIT
Por que ele foi reescrito
do ZERO?

3. BANCOSSUPORTADOS/PROVIDERS
DISPONÍVEIS
#VSSUMMIT
NuGet Package Supported database engines Maintainer / Vendor
Microsoft.EntityFrameworkCore.SqlServer SQL Server 2008 onwards EF Core Project (Microsoft)
Microsoft.EntityFrameworkCore.Sqlite SQLite 3.7 onwards EF Core Project (Microsoft)
Microsoft.EntityFrameworkCore.InMemory EF Core in-memory database EF Core Project (Microsoft)
Npgsql.EntityFrameworkCore.PostgreSQL PostgreSQL Npgsql Development Team
Pomelo.EntityFrameworkCore.MySql MySQL, MariaDB Pomelo Foundation Project
Pomelo.EntityFrameworkCore.MyCat MyCAT Server Pomelo Foundation Project
EntityFrameworkCore.SqlServerCompact40 SQL Server Compact 4.0 Erik Ejlskov Jensen
EntityFrameworkCore.SqlServerCompact35 SQL Server Compact 3.5 Erik Ejlskov Jensen
MySql.Data.EntityFrameworkCore MySQL MySQL project (Oracle)
FirebirdSql.EntityFrameworkCore.Firebird Firebird 2.5 and 3.x Jiří Činčura
EntityFrameworkCore.FirebirdSql Firebird 2.5 and 3.x Rafael Almeida
IBM.EntityFrameworkCore Db2, Informix IBM
IBM.EntityFrameworkCore-lnx Db2, Informix IBM
IBM.EntityFrameworkCore-osx Db2, Informix IBM
Devart.Data.Oracle.EFCore Oracle 9.2.0.4 onwards DevArt
Devart.Data.PostgreSql.EFCore PostgreSQL 8.0 onwards DevArt
Devart.Data.SQLite.EFCore SQLite 3 onwards DevArt
Devart.Data.MySql.EFCore MySQL 5 onwards DevArt
EntityFrameworkCore.Jet Microsoft Access files Bubi
FONTE: https://docs.microsoft.com/en-us/ef/core/providers/

4. ENTITYFRAMEWORK6 VSENTITY
FRAMEWORKCORE2.X
#VSSUMMIT
 NÃO É COMPATIVEL COM .NET CORE (AINDA)
 PERFORMANCE E PROJEÇÃO DE CONSULTAS
 AFAIK: NÃO FAZ INSERÇÃO EM MASSA

5. ENTITYFRAMEWORK6 VSENTITY
FRAMEWORKCORE2.X
#VSSUMMIT
DEMO

6. EXEMPLOGROUPBY–
INACREDITÁVEL
#VSSUMMIT
SELECT [p].[Descricao] FROM [Eventos] AS [p]

7. EXEMPLOGROUPBY– CORRETO
#VSSUMMIT
SELECT [p].[Descricao],
COUNT(*) AS [Total]
FROM [Eventos] AS [p]
GROUP BY [p].[Descricao]

8. EF CORE VS
DAPPER
#VSSUMMIT

9. ENTITYFRAMEWORKCORE2.X
#VSSUMMIT
 DEMO DAPPER
 DEMO EF CORE + EXTENSÃO

10. MUITOOBRIGADO!
#VSSUMMIT