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101 lines
3.9 KiB
ReStructuredText
101 lines
3.9 KiB
ReStructuredText
.. _schema_dialog:
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**********************
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`Schema Dialog`:index:
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**********************
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Use the *Schema* dialog to define a schema. A schema is the organizational
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workhorse of a database, similar to directories or namespaces. To create a
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schema, you must be a database superuser or have the CREATE privilege.
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The *Schema* dialog organizes the development of schema through the following
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dialog tabs: *General* and *Security*. The *SQL* tab displays the SQL code
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generated by dialog selections.
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.. image:: images/schema_general.png
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:alt: Schema dialog general tab
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:align: center
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Use the fields on the *General* tab to identify the schema.
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* Use the *Name* field to add a descriptive name for the schema. The name will
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be displayed in the *pgAdmin* tree control.
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* Select the owner of the schema from the drop-down listbox in the *Owner*
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field.
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* Store notes about the schema in the *Comment* field.
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Click the *Security* tab to continue.
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.. image:: images/schema_security.png
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:alt: Schema dialog security tab
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:align: center
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Use the *Security* tab to assign privileges and security labels for the schema.
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Click the *Add* icon (+) to assign a set of privileges in the *Privileges*
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panel:
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* Select the name of the role from the drop-down listbox in the *Grantee* field.
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* Click inside the *Privileges* field. Check the boxes to the left of one or
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more privileges to grant the selected privileges to the specified user.
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* The current user, who is the default grantor for granting the privilege, is displayed in the *Grantor* field.
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Click the *Add* icon (+) to assign additional sets of privileges; to discard a
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privilege, click the trash icon to the left of the row and confirm deletion in
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the *Delete Row* popup.
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Click the *Add* icon (+) to assign a security label in the *Security Labels*
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panel:
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* Specify a security label provider in the *Provider* field. The named provider
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must be loaded and must consent to the proposed labeling operation.
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* Specify a a security label in the *Security Label* field. The meaning of a
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given label is at the discretion of the label provider. PostgreSQL places no
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restrictions on whether or how a label provider must interpret security
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labels; it merely provides a mechanism for storing them.
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Click the *Add* icon (+) to assign additional security labels; to discard a
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security label, click the trash icon to the left of the row and confirm deletion
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in the *Delete Row* popup.
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Click the *Default Privileges* tab to continue.
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.. image:: images/schema_default_privileges.png
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:alt: Schema dialog default privileges tab
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:align: center
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Use the *Default Privileges* tab to grant privileges for tables, sequences,
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functions and types. Use the tabs nested inside the *Default Privileges* tab to
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specify the database object and click the *Add* icon (+) to assign a set of
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privileges:
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* Select the name of a role that will be granted privileges in the schema from
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the drop-down listbox in the *Grantee* field.
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* Click inside the *Privileges* field. Check the boxes to the left of one or
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more privileges to grant the selected privileges to the specified user.
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* The current user, who is the default grantor for granting the privilege, is displayed in the *Grantor* field.
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Click the *SQL* tab to continue.
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Your entries in the *Schema* dialog generate a SQL command (see an example
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below). Use the *SQL* tab for review; revisit or switch tabs to make any
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changes to the SQL command.
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Example
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*******
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The following is an example of the sql command generated by selections made in
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the *Schema* dialog:
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.. image:: images/schema_sql.png
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:alt: Schema dialog sql tab
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:align: center
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The example creates a schema named hr; the command grants *USAGE* privileges to
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*public* and assigns the ability to grant privileges to *alice*.
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* Click the *Info* button (i) to access online help.
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* Click the *Save* button to save work.
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* Click the *Cancel* button to exit without saving work.
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* Click the *Reset* button to restore configuration parameters.
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