A distributed database-system implementing an entity-attribute-value data-model that is time-aware, accumulative, and atomically consistent - Workiva/eva
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–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...
// 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...
.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 AttributeName First included in: Merchandising/RetailAttributeMetadataEntity (this entity) Properties 展開資料表 NameValue dataFormat string isNullable true...
is.dataFormat.big is.dataFormat.array is.nullable The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array Rate First included in: Payroll/PayrollTaxCodeDetailEntity (this entity) Properties 展开表 NameValue dataFormat string isNullable true T...
The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array DuplicateVoucherOption First included in: GeneralLedger/LedgerParametersEntity (this entity) Properties 展開資料表 NameValue dataFormat string isNullable true Traits List of traits for the Dupl...
is.dataFormat.array is.nullable The attribute value may be set to NULL. is.dataFormat.character is.dataFormat.array Description First included in: AccountsReceivable/CustomerPaymentMethodSpecificationEntity (this entity) Properties NameValue dataFormatstring ...