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Oracle® Database 2 Day + Application Express Developer's Guide
Release 3.1.2

Part Number E10498-02
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3 Getting Started with Oracle Application Express

This section introduces you to areas of the Oracle Application Express user interface. It also shows you how to install the sample objects to use with this guide.

Before you begin, log in to either the host demo environment or your local instance of Oracle Application Express. For instructions, see "Accessing Your Development Environment".

This section contains the following topics:

About the Workspace Home Page

When you log in to Oracle Application Express, the Workspace home page appears.

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Description of the illustration workspace4.gif

Take a few minutes to explore the product. The following three large icons appear in the center of the page:

Note that your workspace and username appear in the lower left corner.

About the Administration List

An Administration list appears on the right side of the Workspace home page. Use the links to administer your application development environment.

If you have administrator or developer privileges, these links appear:

About the Migrations Link

Use the Migrations link to migrate a Microsoft Access application and generate an Oracle Application Express application from the retrieved objects.

About the Workspace Schemas List

The Workspace Schemas list displays the database schemas that are associated with, and therefore accessible to, this workspace.

About the Links List

The Links list contains links to resources to expand your knowledge of Oracle Application Express.

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What Is Application Builder?

You use the Application Builder component of Oracle Application Express to build your application. Through wizards or your direct input, you can assemble an HTML interface (or application) on top of database objects such as tables and procedures. Each application is a collection of pages linked together using tabs, buttons, or hypertext links.

A page is the basic building block of an application. Pages also contain user interface elements such as tabs, lists, buttons, items, and regions. To see the definition of each page belonging to your application, you use the Page Definition page.

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The Page Definition contains three main areas:

Installing the Sample Objects

In Oracle Application Express, users log in to a workspace. You can think of each workspace as a shared work area that separates your objects, data, and applications into a virtual private database.

Before performing any tasks in this guide, you need to create the appropriate sample objects within your workspace. These sample objects are copies of the objects that are typically installed in two schemas:

To create the objects locally in your workspace, you need to import the OEHR Sample Objects application.

This section contains the following topics:

Tip:

In order to successfully import the objects associated with the OEHR Sample Objects application, your Oracle database must include Oracle Spatial. If your database instance does not include Oracle Spatial, you can install it using Database Configuration Assistant. To learn more, see the Oracle Application Express Installation Guide for your operating environment.

Downloading OEHR Sample Objects

To import the OEHR Sample Objects application, you first need to download it from the Oracle Technology Network (OTN).

To download the OEHR Sample Objects application from OTN:

  1. In your Web browser, go to:

    http://www.oracle.com/technology/products/database/application_express/packaged_apps/oehr_sample_objects.zip
    
  2. Save the oehr_sample_objects.zip file to your computer.

  3. Unzip and extract the oehr_sample_objects_installer.sql file:

    • Microsoft Windows - Double-click the oehr_sample_objects.zip file

    • UNIX or Linux - Enter the following command:

      $ unzip oehr_sample_objects.zip
      

Importing the OEHR Sample Objects

After you download and unzip the OEHR Sample Objects application, you need to import it into Oracle Application Express. During the import process, specify that you want to install both the application and the supporting objects. Installing the application creates the objects and sample data needed to complete the exercises in this guide.

To import and install the OEHR Sample Objects application:

  1. Log in to Oracle Application Express.

    For instructions, see "Logging In to the Hosted Demo Environment" or "Logging In to Your Local Instance".

  2. On the Workspace home page, click Application Builder.

    The Application Builder home page appears.

  3. Click the Import button.

  4. For Specify File, specify the following:

    1. Import file - Click Browse and navigate to the oehr_sample_objects_installer.sql file.

    2. File Type - Select Application, Page, or Component Export.

    3. File Character Set - Select the correct character set.

    4. Click Next.

    Next, you need to install the imported file.

  5. To install an imported file, click Next.

    The Install Application Wizard appears.

  6. In the Install Application Wizard, specify the following:

    1. Parsing Schema - Select the schema you created when you set up your development environment.

    2. Build Status - Select Run and Build Application.

    3. Install As Application - Select Auto Assign New Application ID.

    4. Click Install.

  7. For Install Supporting Objects, select Yes and click Next.

  8. Confirm your selections by clicking Install.

  9. After the installation is completed, click the Home breadcrumb link at the top of the page.

    The Application Builder home page appears.

Checking Your Workspace Storage Space

If you experience problems installing the OEHR Sample Objects application, verify the available space in your workspace. You may need to request additional storage space.

If you are a workspace administrator, you can:

Deleting the OEHR Sample Objects Application

Deleting the OEHR Sample Objects application and deinstalling the supporting objects completely removes all associated objects and sample data.

To delete the OEHR Sample Objects application:

  1. Log in to Oracle Application Express.

  2. On the Workspace home page, click Application Builder.

    The Application Builder home page appears.

  3. Click the OEHR Sample Objects icon.

  4. On the Tasks list, click Delete this Application.

    The Deinstall page appears.

  5. To remove all associated objects and sample data, select Remove Application Definition and Deinstall Supporting Objects.

  6. Click Deinstall.

Using HR Schema Instead of OEHR Sample Objects

If you are using a locally installed instance of Oracle Application Express release 2.2.1.1 or later (not a hosted demo environment such as http://apex.oracle.com) and have the HR schema installed, you can perform the exercises in this guide directly against the HR schema.

To do so, you must associate the HR schema with your workspace instead of performing the steps described in "Importing the OEHR Sample Objects".

Note:

The table names in the HR schema do not include the OEHR prefix (EMPLOYEES versus OEHR_EMPLOYEES). Because this guide outlines all the steps using the OEHR schema, you will need to adjust your selections and code accordingly.

Also, note that other users may be using the HR schema. Therefore, the objects or data within the objects may differ from that shown in this guide.

Viewing Your Database Objects

Review the objects you just created by going to Object Browser. Object Browser enables you to browse, create, and edit objects in your database.

To view the objects:

  1. On the Workspace home page, click SQL Workshop.

  2. Click Object Browser.

    Object Browser appears.

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    Description of the illustration o_brws_oehr.gif

    Object Browser is divided into two sections:

    • Object Selection pane displays on the left side of the Object Browser page and lists database objects of a selected type within the current schema.

    • Detail pane displays to the right of the page and displays detailed information about a selected object.

  3. From the list in the Object Selection pane on the left, select Tables.

    The Detail pane lists the tables in your current schema.

  4. In the Object Selection pane, click OEHR_EMPLOYEES from the list.

    The Detail pane shows details about the table.

  5. Click the Data tab at the top of the Details pane.

    The data in the OEHR_EMPLOYEES table appears. Note that other tabs show additional details about the object you select.

  6. To search for an object name, enter a case-insensitive term in the Search field.

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    Description of the illustration o_brws_srch_oehr.gif

  7. To view all objects, leave the Search field blank.

See also:

"Managing Database Objects with Object Browser" in Oracle Application Express SQL Workshop and Utilities Guide