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Toad Data Modeler 6.2 - User Guide

Introduction User Interface Models and Model Objects
Physical Data Model
About Physical Data Modeling Benefits of Physical Data Model Entity Relationship Diagram Objects Basic Database Design Advanced Database Design
Universal Data Model Logical Data Model Working with Model Objects Model Properties Model Statistics
Features and Tools
Application Variables Export/Import DDL Script Generation Graphics Model Actions Print Projects Reports Reverse Engineering Scripting and Customization SQL Templates Tips and Tricks Toad for Oracle Integration Toad Intelligence Central (TIC) Integration Tools Version Control
Options and Configuration Databases
Supported Databases Connection Types by Database DB2 UDB v. 8 (LUW) DB2 v. 9 (LUW) DB2 v. 9.5 (LUW) DB2 v. 9.7 (LUW) DB2 v. 10.1 (LUW) DB2 v. 10.5 (LUW) DB2 z/OS v. 9 DB2 z/OS v.10 DB2 z/OS v. 11 Greenplum 4.1 Greenplum 4.2 Ingres 9.3 Ingres 10.0 Microsoft Access 2000/2002/2003 Microsoft Access 2007/2010 Microsoft Azure SQL Database Microsoft Azure SQL Database V12 Microsoft SQL Server 2000 Microsoft SQL Server 2005 Microsoft SQL Server 2008 Microsoft SQL Server 2012 Microsoft SQL Server 2014 Microsoft SQL Server 2016 MySQL 5.0 MySQL 5.1 MySQL 5.5 MySQL 5.6 MySQL 5.7 Oracle 9i Oracle 10g Oracle 11g Release 1 Oracle 11g Release 2 Oracle 12c Release 1 Oracle 12c Release 2 PostgreSQL 8.1 PostgreSQL 8.2 PostgreSQL 8.3 PostgreSQL 8.4 PostgreSQL 9.0 PostgreSQL 9.1 PostgreSQL 9.2 PostgreSQL 9.3 PostgreSQL 9.4 PostgreSQL 9.5 SQLite 3.7 Sybase ASE 12.5 Sybase ASE 15 Sybase ASE 15.5 Sybase ASE 15.7 SAP ASE 16.0 Sybase IQ 15.2 Sybase SQL Anywhere 11 SAP SQL Anywhere 17 Teradata 13 Vertica Database 8.0
Legal Information

Alternate Keys

Models and Model Objects > Physical Data Model > Advanced Database Design > Alternate Keys

You can create a relationship between a Parent and Child entities using:

  • Key (Primary or Alternate Key) of parent entity
  • Unique Index of parent entity

Alternate keys are used when you want to link two entities using two attributes. These two attributes make one unique item.

Scenario

You would like to create a composite alternate key which contains Title and Director attributes in the Film entity.

Solution

  1. Edit the Film entity.
  2. In the Entity Properties form click the Keys tab. Here, primary keys and alternate keys are stored, and you can manage them easily using the Add, Edit and Delete buttons. Now click Add to create a new key and confirm by clicking Apply.
  3. Edit the new key.
  4. Define its properties on tab General and then switch to the Attributes tab.
  1. From the window Available, select attributes Title and Director and click the Add arrow button to move them to the Selected window.
  2. Set properties in other tabs as you wish (e.g. Notes) and confirm.

 

Scenario: After creating the alternate key, you would like to use it for linking entities.

To select the alternate key for relationship

  1. Double-click the relationship.
  2. From the Parent Key box, select the alternate composite key title-director.

Indexes

Models and Model Objects > Physical Data Model > Advanced Database Design > Indexes

To create an index

  • Right-click an entity on Workspace and choose Add | Index. The Index Properties dialog opens.

or

  • In the Entity Properties form, select the Indexes tab and click Add.

To edit indexes

  • In the Entity Properties dialog | Indexes tab, double-click the index or Edit.
Option Description

Above the Object Navigator Dropdown Menu, you can see name of entity that the index belongs to. Click the button on top right-hand corner to open the parent form (Entity Properties form).

Object Navigator Dropdown Menu

All indexes of selected entity are listed here. The box allows you to edit indexes quickly and comfortably from one place.

General Tab

Description

Caption

Logical attribute name.

Name

Physical attribute name.

Schema

Schema selection.

Unique

Select this option to set the index as unique. Via unique indexes, you can link entities together. See Select Parent Key for Relationship for more information on available linking methods.

Bitmap Index

Database dependent item (Oracle). Select this checkbox to define the index as bitmap index.

Generate

Select it to generate the index in final SQL (DDL) script. (It is selected by default.)

Note: Other options on the General tab vary according to the database platform you're using. Options specific to your database can be found in the "Databases" chapter.

Items Tab

Option

Available

A list of all attributes of the entity.

Selected

Attribute(s) that have been assigned to the index.

Notes Tab

Tab for notes on the index.

Index Properties Tab Description

Tablespace

Select a tablespace or click the button on the right to define a new tablespace.

Indextype

Index type definition

ODCI Parameters

ODCI parameters definition

To display indexes on the Workspace

Right-click the WS, select Workspace Format | Entity tab and select the Display Indexes checkbox.

See how indexes are displayed:

Note:Even when the indexes are not displayed, you can see which attribute belongs to which index (e.g. attribute Name is assigned to indexes i_name and i_name_address - (IX1,IX2)

To delete an index

In the Entity Properties dialog select the Indexes tab, choose the index and click Delete.

Check Constraints

Models and Model Objects > Physical Data Model > Advanced Database Design > Check Constraints

Check constraints can be created in the Check Constraints tab in Entity Properties form (for multiple column check constraints) or in the Attribute Properties dialog (for single column check constraint).

To add a check constraint

In Entity Properties form, select the Check Constraints tab and click Add.

To edit a check constraint

In Entity Properties form | Check Constraints tab, double-click the selected check constraint or press Edit .

General Tab

Description

Caption

Logical check constraint name

Name

Physical check constraint name

Check Constraint Rule

Select rule or click the button on the right to define a new rule.

Generate

Select it to generate the check constraint in final SQL (DDL) script (selected by default).

SQL Tab

Write SQL script for the check constraint here.

See About Templates for more information.

Notes Tab

Space for your notes on the check constraint.

Note:

  • To copy a check constraint, press CTRL and drag the constraint over the Check Constraints folder of a target entity in Model Explorer.
  • To move a check constraint, drag it over the Check Constraints folder of a target entity in Model Explorer.
  • To delete a check constraint, select it and click Delete in the Check Constraints tab of the Entity Properties form.

Triggers

Models and Model Objects > Physical Data Model > Advanced Database Design > Triggers

To add a trigger

In Entity Properties form, select the Triggers tab and click Add.

To edit a trigger

In Entity Properties form, Triggers tab, double-click the selected trigger or press Edit.

Example: Trigger Properties dialog (Oracle 10g db)

Option Description

Above the Object Navigator Box, you can see name of entity the trigger belongs to. If you click the button in top right-hand corner, the parent form will open (Entity Propertiesin this case).

General Tab

Description

Caption

Logical trigger name

Name

Physical trigger name

Schema

Schema selection box

Trigger Fire

Before, After (database dependent) - select a trigger fire.

Trigger Events

Delete, Insert, Update - select a trigger event.

Generate

Select to generate the trigger in final SQL (DDL) script (selected by default.)

Generate SQL Only

Select to generate the SQL code written in tab SQL only.

SQL Tab

Write SQL script for the trigger here.

About Templates

Notes Tab

Space for your notes on the trigger.

 

Example: Trigger Properties dialog | SQL tab (Oracle 10g db)

Note:

  • To copy a trigger, press CTRL and drag the trigger over the Triggers folder of a target entity in Model Explorer.
  • To move a trigger, drag it over the Triggers tab (folder) of a target entity in Model Explorer.
  • To delete a trigger, select it and click Delete on the Triggers tab in the Entity Properties form.
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