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1006845 wrote:Welcome to OTN!
The help is necessary. How strelochka (communication) which are established between sushchnost, it is possible to sign? How to give them the name?
SQL*Developer communications are established by creating connections to the desired database.
Start SQL*Developer. right click on the connecitons icon, and choose Create Connection. Fill in the information to the database server including username and password and test the connection.
As it is created and where a remote key and for what it is necessary.After you can connect to the database you can use the object browser to find the objects available to the schema you logged in as. You can create database objects if the schema has those priveleges.
And how references are created on objects or between them?What do you mean by "references"?
When Logical Model diagram is displayed in Data Modeler or SQL Developer, a set of icon buttons are displayed above the diagram.
These include a "New Entity" button and also "New M:N Relation" and "New 1:N Relation" buttons.
To add a many-to-many Relationship, use the "New M:N Relation" button, click over one of the Entities on the diagram, then click over the other Entity on the diagram.
The Relation Properties dialog is then displayed, allowing you to provide a Name for the Relationship and any other details.
There is actually a forum specifically for Data Modeler: SQL Developer Data Modeler