Attribute kind Value derived from a database query? Persisted in the database? persistent yes yes (the value outlives the class that created it) transient no no Persistent entity attributes correspond to databas
Unique Identifier data attributes Virtual attributes Categorization data attributes Each of the five attributes in this group inherit from a common EnumAttributeMetadata base class and use a pre-defined set of valid values to group records into categories. Set Picklist, Status, and State ...
relationship, you can specify that data from certain fields in the referenced entity can be transferred to any new related records created in the context of the relationship. This can streamline data entry when you are creating new related records. For more information, seeEntity ...
DbModelBuilderVersionAttribute DbSet DbSet<TEntity> DropCreateDatabaseAlways<TContext> DropCreateDatabaseIfModelChanges<TContext> EntityState IDatabaseInitializer<TContext> IDbSet<TEntity> MigrateDatabaseToLatestVersion<TContext,TMigrationsConfiguration> ...
Inheritance Object Database Attributes SuppressMessageAttribute Properties Expand table CommandTimeout Gets or sets the timeout value, in seconds, for all context operations. The default value is null, where null indicates that the default value of the underlying provider will be used. Connecti...
(MySqlDbContext).Assembly);modelBuilder.Properties().Where(o=>typeof(IRowVersion).IsAssignableFrom(o.DeclaringType)&&o.PropertyType==typeof(byte[])&&o.Name=="RowVersion").Configure(o=>o.IsConcurrencyToken().HasDatabaseGeneratedOption(DatabaseGeneratedOption.None));Database.SetInitializer(newMySqlDb...
Figure 4-11. The ER diagram of the music database The only strong entity in the database isArtist, which has anartist_idattribute that uniquely identifies it. EachAlbumentity is uniquely identified by itsalbum_idcombined with theartist_idof the correspondingArtistentity. ATrackentity is similarl...
DbModelBuilderVersionAttribute DbSet DbSet Constructors Properties Methods DbSet<TEntity> DropCreateDatabaseAlways<TContext> DropCreateDatabaseIfModelChanges<TContext> EntityState IDatabaseInitializer<TContext> IDbSet<TEntity> MigrateDatabaseToLatestVersion<TContext,TMigrationsConfiguration> ...
Staged Entity Attribute Staged Metadata Async Operation Staged Source Control Component StageSolutionUpload Subject Subscription Manually Tracked Object Subscription Statistic Offline Subscription Statistic Outlook Subscription Sync Entry Offline Subscription Sync Entry Outlook SupportUserTable Synapse Database Synapse...
Column Attribute By Applying theColumnattribute, we can change the column name, datatype, and order of the column. The attribute takes the following argument 1 2 3 [Column(stringname,Properties:[Order=int],[TypeName=string]) Where Name:Name of the database column ...