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Database Procedures

Database Procedures (sometimes referred to as Stored Procedures or Procs) are subroutines that can contain one or more SQL statements that perform a specific task. They can be used for data validation, access control, or to reduce network traffic between clients and the DBMS servers. Extensive and complex business logic can be embedded into the subroutine, thereby offering better performance.

Database Procedures are similar to Database Functions. The major difference is the way in which they are invoked - Database Functions can be used in the same way as for any other expression within SQL statements, whereas Database Procedures must be invoked using the CALL or EXEC statement, depending on the DBMS.

In Enterprise Architect, Database Procedures can be modeled in one of two ways:

  • As individual objects (the default method) or
  • As operations in a container

Functionally the two methods result in the same DDL being produced. The main difference is visual - by having several Operations in one container, you have fewer elements and less clutter on the diagram.

Individual objects

Database Procedures modeled as individual objects are UML Classes with the stereotype «procedure»; you create these either:

  • Within the Database Builder or
  • By dragging the 'Procedure' icon from the Data Modeling Toolbox onto a diagram

Add a Database Procedure using the Database Builder



See also


Open the Database Builder.

The Database Builder


Load or create a Data model.


Right-click on the Procedures Package and select 'Add New Procedure'.


Overtype the default name with the appropriate name for the Procedure, and press the Enter key.


Double-click on the new Procedure, or right-click on it and select 'SQL Object Properties'.

The SQL Object Editor screen displays.

Add a Database Procedure to a diagram



See also


Open your Data Modeling diagram and, if necessary, display the 'Data Modeling' page of the Diagram Toolbox (click on Search to display the 'Find Toolbox Item' dialog and specify 'Data Modeling').


Drag the 'Procedure' icon onto the diagram.


This generates the Procedure element:

A procedure element in Sparx Systems Enterprise Architect.


Right-click on the new Procedure element and select 'SQL Object Properties'.

The SQL Object Editor screen displays.

SQL Object Editor

The 'SQL Object Editor' dialog is shared by a number of SQL-based database objects (Views, Procedures and Functions); it helps you to manage the various properties of the SQL-based object.



See also


If it has already been set, the default database type displays.

If the default has not been set, or you want to change the database type for this Procedure, click on the drop-down arrow and select the target DBMS to model.

Set the Database Type


If necessary, type in a comment on the current Procedure.


Type the full SQL Procedure definition, including the CREATE PROCEDURE syntax.

The code editor provides Intelli-sense for basic SQL keywords, functions and names of all objects in the current data model.

Options - Code Editors Intelli-sense

Operations in a Container

Database Procedures modeled as operations have a container object, this being a UML Class with the stereotype «procedures» (with an 's' on the end). Each Database Procedure is an operation with the stereotype «proc». The system provides a dedicated Maintenance window through which you can easily manage the Database Procedures defined as operations.

A procedures element in Sparx Systems Enterprise Architect.

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