er diagram tool online

exporting ER diagrams to Erwin format, only import is supported. This requires our second approach. Another approach is to use the Orthogonaltoolbox gadget, which is a small tool that is specifically responsible for visioer, which generates the corresponding sqlscript through an XSLT template. How to use: 1. Download and install the Orthogonaltoolbox (Note: the. Net Framework 1.1.4322,http://download.csd

In the painting ER diagram when looking for a more useful and professional point of the tool, looking for a half-day finally chose the seemingly less professional EA to draw ER diagram Briefly explain how the EA is implemented to draw

directionality, and there is a cardinality in each direction.ExampleThe link between "department" and "student" two entities is a one-to-many connection, in other words the link between "student" and "department" is a multi-pair connection. And a student must belong to a department, and can only belong to a department, can not belong to 0 departments, so from the "student" entity to "department" the base of the entity is "a", from the other side of the contact to consider, a department can have

the box. For the primary property name, underline it under its name. Connections: Between entities and attributes, between entities and relationships, between contacts and attributes, and by a straight line, and by marking the type of contact on a line. (For one-to-many connections, write 1 on the two-entity connection direction; On one side write 1, many of the parties write n; for many-to-many relationships, write n,m in the direction of two entity lines. ) First , we want to use the shape o

%.] Sys.columns Cjoin [%catalog%.] Sys.objects o on (o.object_id = c.object_id)join [%catalog%.] Sys.schemas u on (u.schema_id = o.schema_id)join [%catalog%.] Sys.types T on (t.user_type_id = c.system_type_id)Left outer join[%catalog%.] Sys.identity_columns i on (i.object_id = c.object_id andi.column_id = c.column_id)Left outer join[%catalog%.] Sys.default_constraints D on (d.object_id = c.default_object_id)whereO.type in (' U ', ' S ', ' V ')[and U.name =%.q:owner%][and O.name=%.q:table%]ORDER

the direction of the link, generally with a verb or a dynamic table.For example, the "Students to subject" group box should be filled in with "owning", and "belong" in the "Lessons to student" group box. (Here is just an example, maybe some words are not very reasonable).Vii. Mandatory definition of linkagesMandatory the mandatory relationship between the form and this direction. Select this check box to create a vertical line of contact lines on the contact line. Not selecting this check box i

Wireframes are often used in design, for example, web designers to deal with the design of the draft block diagram to discuss the function and structure of the site, if you do not want to download wireframe software, you can through some online Web site to complete the production of wireframe, these web site function is not worse than software, very powerful. Today on the Internet to see an article on the

relationship that is represented in UML with a solid line with arrows pointing to the contained class. In the you may find that there are 1 online. 1, this is a description of the inclusion relationship. There are several types of UML classes.1..1 表示另一个类的一个对象只与该类的一个对象有关系0..* 表示另一个类的一个对象与该类的零个或多个对象有关系1..* 表示另一个类的一个对象与该类的一个或多个对象有关系0..1 表示另一个类的一个对象没有或只与该类的一个对象有关系* 任意多个对象关联Aggregation (Aggregation) relationshipsAn aggregation relationship is a relationsh

Jiang Tao of csdn commented on Weibo not long ago that processon is a Web-based Visio, and privately studied processon out of curiosity. Finally, we found that processon is much better than Microsoft's Visio in terms of user experience and technology. Next we will briefly introduce this HTML5-based plotting tool. Graphic tool operation interface ProcessonIn the UIThe design is similar to that of Goog

Summary :-- recommended reasons : Recently from the Windows operating system to the MAC, is looking at design patterns and refactoring, can not find good UML tools, so on the internet to find an online use of the UML tools, used to find it well, recommend to everyone;-- tool address : https://www.processon.com/;I. UML usage process1. Create a UML diagramCreate UML Diagr