sql-server - SQL Server：图形/层次结构 SQL 结构

Question

经过N小时的设计，如何将这样的结构保存到关系数据库（SQL Server）中。

我结束了这个结构，但它并不是很好。

create table [OperationalModel]
(
    [Id] int,
    [Name] varchar(150),
    [Code] varchar(10),
    [OrgId] int,
    [Vertex] int,
    [RelatedOrgIdOnSameVertex] int
);

insert into [dbo].[OperationalModel] 
values
    (1, 'x', 1, NULL),
    (1, 'x', 2, 1),
    (1, 'x', 3, 1),
    (1, 'x', 4, 2, 3),
    (1, 'x', 5, 2),
    (1, 'x', 6, 2),
    (1, 'x', 7, 3),
    (1, 'x', 8, 4);
.
.
.
.

任何人都有更好的想法如何将此结构保存在 SQL Server 等关系数据库中？

谢谢

Answer 1

you need two table. 
one is for the nodes: 
Table: OperationalModel: 
Columns: 
[Id] int,
[Name] varchar(150),
[Code] varchar(10),

another is the edges: 
Table: Edges: Columns: 
Id, OperationalModelId, VertexId, Etc ... 

Data: insert into [dbo].[OperationalModel] values
(1,'x',1),
(1,'x',2),
(1,'x',3),
(1,'x',4),
(1,'x',5),
(1,'x',6),
(1,'x',7),
(1,'x',8);

Data For second table: As per the relationship.
insert into [dbo].[Edge] values
(1,1,2),
(2,1,3),
(3,2,1),
(4,2,4),
(5,3,1),
(5,3,4),
(5,3,5);

The Edge table will be Many to many relationship.

Answer 2

您指的是 SQL 服务器。

因此，如果您使用的是 SQL 2017，请使用其中内置的 Graph 数据库支持。您将能够利用已有的查询系统。

https://docs.microsoft.com/en-us/sql/relational-databases/graphs/sql-graph-overview?view=sql-server-ver15