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public class DataSeedingContext: DbContext {public DbSet < Blog > Blogs {get; set;} public DbSet < Post > Posts {get; set;} protected override void OnConfiguring (DbContextOptionsBuilder optionsBuilder) => optionsBuilder.
It uses a sequence-based hi-lo pattern to generate values. Hi/Lo is used in scenarios where an application needs its entities to have an identity prior to persistence. It is a value generation strategy. An alternative to Hi/Lo would be for the application to generate keys as universally unique identifiers (UUID).
Entity Framework (EF) is an open source [2] object–relational mapping (ORM) framework for ADO.NET. It was originally shipped as an integral part of .NET Framework, however starting with Entity Framework version 6.0 it has been delivered separately from the .NET Framework. Entity Framework 6.4 was the latest release of the classic framework.
Testing framework(s) DB migration framework(s) Security framework(s) Template framework(s) Caching framework(s) Form validation framework(s) Scaffolding RAD Mobility CakePHP: PHP >= 7.2 [76] Any Yes Yes, Push & Cells Yes ORM, Data Mapper Pattern, SQL Relational Algebra Abstraction Layer
A schema migration is performed on a database whenever it is necessary to update or revert that database's schema to some newer or older version. Migrations are performed programmatically by using a schema migration tool. When invoked with a specified desired schema version, the tool automates the successive application or reversal of an ...
In January 2006, a new version of Enterprise Library was released that targeted .NET Framework 2.0. The most significant change in this release was that the Configuration Application Block was removed, and the blocks were updated to use .NET's improved System.Configuration capabilities. This release also included significant improvements to the ...
British mobile phone company O2 has unveiled an “AI granny” called Daisy who is helping combat fraud by wasting scammers’ time with long phone calls.
Keys can comprise several columns, in which case they are composite keys. In many cases, the primary key is an auto-generated integer that has no meaning for the business entity being represented, but solely exists for the purpose of the relational database – commonly referred to as a surrogate key.