A distributed database-system implementing an entity-attribute-value data-model that is time-aware, accumulative, and atomically consistent - Workiva/eva
Entity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest...
a new row is inserted intoeav_attribute. In a traditional relational database/single-table system, you’d need to ALTER the actual database structure, which can be a time consuming/risky proposition for
// Entity Data Model [global::System.Data.Objects.DataClasses.EdmEntityTypeAttribute(NamespaceName="NorthwindModel", Name="Employee")] [global::System.Runtime.Serialization.DataContractAttribute()] [global::System.Serializable()] public partial class Employee : global::System.Data.Objects.DataClasses...
this._EmployeeID = value; this.SendPropertyChanged("EmployeeID"); this.OnEmployeeIDChanged(); } } } 尽管EDM公有属性(public property)的attribute是不同的,但get和set 基本是一样的。 // Entity Data Model [global::System.Data.Objects.DataClasses.EdmScalarPropertyAttribute(EntityKeyProperty=true, IsN...
is.dataFormat.character is.dataFormat.big is.dataFormat.array is.nullable The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array CustomerDataAreaId First included in: AccountsReceivable/CustomerAttributeValueEntity (this entity) Properties Expa...
.GetCustomAttribute<DefaultValueAttribute>();if(defaultValueAttribute!=null){property.SetDefaultValue(defaultValueAttribute.Value);}}});}} 这样就算完成了,我们尝试去执行 Add-Migration 命令,然后观察生成的文件,就会发现已经包含我们的注释信息了,然后直接 Update-Database 推送到数据库中即可。
is.dataFormat.array is.nullable The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array Comments First included in: HRM/PayrollPayPeriodEntity (this entity) Properties Rozbalit tabulku NameValue dataFormat string isNullable true Traits List of ...
The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array ModelNum First included in: GeneralLedger/LedgerRRGCellTable_RUEntity (this entity) Properties توسيع الجدول NameValue dataFormat string isNullable true T...
is.dataFormat.array is.nullable The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array AttributeName First included in: Merchandising/RetailAttributeMetadataEntity (this entity) Properties 展開資料表 NameValue dataFormat string isNullable true...