.. _database:

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The Database Dialog
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Use the *Database* dialog to define a database. To create a database, you must be a database superuser or have the CREATE privilege.  

The *Database* dialog organizes the development of a database through the following dialog tabs: *General*, *Definition*, *Security*, and *Parameters*. The *SQL* tab displays the SQL code generated by dialog selections. 

.. image:: images/database_general.png

Use the fields in the *General* tab to identify the database:

* Use the *Database* field to add a descriptive name for the database. The name will be displayed in the *pgAdmin* tree control.
* Select the owner of the database from the drop-down listbox in the *Owner* field. 
* Store notes about the database in the *Comment* field.  

Click the *Definition* tab to continue.

.. image:: images/database_definition.png

Use the *Definition* tab to set properties for the database:

* Select a character set from the drop-down listbox in the *Encoding* field. The default is *UTF8*.
* Select a template from the drop-down listbox in the *Template* field. If you do not specify a template, the database will use template1. 
* Select a tablespace from the drop-down listbox in the *Tablespace* field. The selected tablespace will be the default tablespace used to contain database objects. 
* Select the collation order from the drop-down listbox in the *Collation* field.
* Select the character classification from the drop-down listbox in the *Character Type* field. This affects the categorization of characters, e.g. lower, upper and digit. The default, or a blank field, uses the character classification of the template database.
* Specify a connection limit in the *Connection Limit* field to configure the maximum number of connection requests. The default value (*-1*) allows unlimited connections to the database.
 
Click the *Security* tab to continue.

.. image:: images/database_security.png

Use the *Security* tab to assign privileges and define security labels.  

Use the *Privileges* panel to assign privileges to a role. Click *Add* to set privileges for database objects:

* Select the name of the role from the drop-down listbox in the *Grantee* field.
* Click inside the *Privileges* field. Check the boxes to the left of one or more privileges to grant the selected privilege to the specified user.
* Select the name of the role from the drop-down listbox in the *Grantor* field. The default grantor is the owner of the database.

Click add to set additional privileges; to discard a privilege, click the trash icon to the left of the row and confirm deletion in the *Delete Row* popup.

Use the *Security Labels* panel to define security labels applied to the database. Click *Add* to add each security label selection: 

* Specify a security label provider in the *Provider* field. The named provider must be loaded and must consent to the proposed labeling operation.
* Specify a a security label in the *Security Label* field. The meaning of a given label is at the discretion of the label provider. PostgreSQL places no restrictions on whether or how a label provider must interpret security labels; it merely provides a mechanism for storing them. 

To discard a security label, click the trash icon to the left of the row and confirm deletion in the *Delete Row* popup.

Click the *Parameters* tab to continue.

.. image:: images/database_parameters.png

Use the *Parameters* tab to set parameters for the database:

* Use the drop-down listbox next to *Parameter name* to select a parameter.
* Use the drop-down listbox next to *Role* to select a role to which the parameter setting specified will apply.
* Click *Add* to add the parameter definition to the table below.
* Use the *Value* field to set a value for the parameter.

Follow these steps to add additional parameter value definitions; to discard a parameter, click the trash icon to the left of the row and confirm deletion in the *Delete Row* popup.

Click the *SQL* tab to continue.

Your entries in the *Database* dialog generate a SQL command (see an example below). Use the *SQL* tab for review; revisit or switch tabs to make any changes to the SQL command.

**Example**

The following is an example of the sql command generated by user selections in the *Database* dialog: 

.. image:: images/database_sql.png

The example creates a database named *hr* that is owned by *enterprisedb*.  It allows unlimited connections, and is available to all authenticated users. 
 
* Click the *Info* button (i) to access online help. View context-sensitive help in the *Tabbed browser*, where a new tab displays the PostgreSQL core documentation.
* Click the *Save* button to save work.
* Click the *Cancel* button to exit without saving work.
* Click the *Reset* button to restore configuration parameters.