ER/Studio - Embarcadero Technologies Product Documentation

USING ER/STUDIO > WORKING WITH THE DATA DICTIONARY
• Synchronize Domain and Attribute/Column Names: Select this option to synchronize the Domain, Attribute,
and Column Names. If you entered names in the Attribute and/or Column Name fields that are different than the
Domain name, selecting this option overrides your entries.
• Apply nullability to all bound columns? This option becomes available when you select a datatype that can
have nulls but you choose to disallow nulls by clicking No in the Allow Nulls area. Selecting this check box does
not impact if there are no bound columns.
• Identity Property area: This area becomes available if the Identity Property is supported by the database
platform of a model in the diagram, and the datatype selected, such as TINYINIT, supports this property.
Default tab
• Default Binding: If a default value has not already been bound to the domain (Data Dictionary > Defaults > Edit
Default Definition > Binding Information), you can enter a Declarative Default value or choose another Default
from the Default Binding list. The declarative default will appear in the SQL produced when you select Generate
Database from the physical model.
• Declarative Default: Specifies the default domain value when a value is not explicitly specified during an insert.
DEFAULT definitions can be applied to any columns except those defined as timestamp, or those with the
IDENTITY property. Only a constant value, such as a character string; a system function, such as
SYSTEM_USER(); a NULL; or a constraint name can be assigned to a DEFAULT.
Rule/Constraint tab
Add, modify, or delete a constraint. Check constraints are used to ensure the validity of data in a database and to
provide data integrity. For more information, see Enforcing Data Integrity Using Check Constraints.
Reference Values tab
Reference Values are attributes that define allowed data. They represent look-up table columns or code-value
ranges or a rule or constraint applied to columns. For more information, see Defining Valid Attribute Data Using
Reference Values.
Naming Standards tab
Controls user and object permissions to modify the affected item. When a Naming Standards Template is bound
to an object, then that template is used instead of the Naming Standards Template selected in the Naming
Standards Utility or the Generate Physical Model utility. This allows you to apply different naming standards to
different objects when portions of a model require different versions of a standard. For example, some objects
already exist in the database and you do not want to apply a newer naming standard to them. For more
information, see Enforcing Naming Standards Using Naming Standards Templates.
Definition tab
Note tab
Enter or edit a definition for the domain. If the target database supports it, ER/Studio adds this definition as a
domain comment when generating SQL code.
The notes added here are included as part of the HTML report when you generate a report for the model. You
can format the notes using standard HTML tags.
Override Controls tab
Controls what can or cannot be overridden on columns bound to this domain.
• General Overrides area: The allow/disallow options disable the “override” indicator on the bound
attributes/columns if set to Disallow. When you modify the domain override controls and set one or more of the
general override options to Disallow, ER/Studio (and the RepoServer for Enterprise Data Dictionaries) removes
all existing overrides for that particular property.
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