oracle apex-hands-on-guide lab#1

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Oracle APEX (Application Express) Hands-On Guide I

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BISP is committed to provide BEST learning material to the beginners and advance learners. In the same series, we have prepared a complete end-to end Hands-on Beginner’s Guide for Oracle APEX. The document focuses on basic

keywords, terminology and definitions one should know before starting Oracle APEX. Join our professional training program and learn from experts.

History: Version Description Change Author Publish Date 0.1 Initial Draft Shiva Kant Pandey 10th Jan 2013 0.1 Review#1 Amit Sharma 12th Jan 2013


Table of Contents Introduction ..................................................................................................................................... 3

Components Of Oracle Apex : ........................................................................................................... 3

Advantage: ....................................................................................................................................... 5

SQL Workshop as a component of Oracle APEX .............................................................................. 5

Creating a new Workspace & login inside it. ..................................................................................... 5

Working with component SQL Workshop : ..................................................................................... 12

[1] Working on Object Browser ....................................................................................................... 13

Creating a Table through Object Browser ...................................................................................... 14

Creating lookup table .................................................................................................................... 20

[2] Working on SQL commands ...................................................................................................... 23

[3] working on SQL Scripts ............................................................................................................. 25

Create Tables Through Script ......................................................................................................... 26

Create Triggers Through Script ...................................................................................................... 30

[4] Working On Query Builder ........................................................................................................ 39

[5] Working with Utilities ................................................................................................................ 45


Introduction Oracle Apex: Oracle Application Express is a rapid Web application development tool that lets you share data and create applications. Using only a Web browser and limited programming experience, you can develop and deploy applications that are fast and secure.

Components Of Oracle Apex : It has primarily three components these are :

Application Builder :It helps to build following applications

database applications

websheet applications

packaged applications etc.

SQL Workshop : It is used for the following purpose

Browse , create & edit database objects

Execute SQL and PL/ SQL statements

Upload & run SQL scripts

Export & import SQL scripts

Build & save queries using Query builder

Administration : It is used to perform the administrative tasks such as

Manage Service

Manage Users & Groups

Monitor activity

Manage Dashboards & reports

Background One popular misconception is that Application Express is merely new version of Web DB. Mike Hichwa created Web DB, a successful web front-end for Oracle, but the development of Web DB

started to move in a direction that diverged from Mike's vision. When tasked with building an internal web calendar, Mike enlisted the help of Joel Kallman and started "Flows". They co-developed the Web Calendar and Flows, adding features to Flows as they needed them to develop the calendar. In the earliest days of Flows, there was no front-end for it, so all changes to an application were made in SQL*Plus via inserts, updates and deletes. In some ways APEX is an evolution of Web DB, but it was developed with new code and no upgrade path.


History Evolution of oracle application Express is described below in tabular form

Product Name

Version Released Notes

HTML DB 1.5 2004 First release

HTML DB 1.6 2004 Added themes

HTML DB 2.0 2005 Added SQL Workshop

Application Express

2.1 January 2006

HTMLDB was renamed to APEX. Version 2.1 of APEX was bundled with the free Oracle Express Edition (XE) database.

Application Express

2.2 2006 Packaged Applications

Application Express

3.0 2007 This version featured several new features, including PDF Printing, Flash charting and Access Application Migration

Application Express

3.0.1 July 2007 This version could also be installed into an Oracle XE database.

Application Express

3.1 Spring 2008

This included a new major feature known as Interactive Reporting (enabled end-users to customize a report without programmer intervention, using techniques such as filtering, sorting, group-by, choosing displayed columns, etc. The user can even save multiple versions of their customized reports. The programmer can limit which features are enabled). Also added support for BLOB data type

Application Express

3.2 2009 Forms conversion

Application Express

4.0 June 2010

Some notable features are declarative Dynamic Actions (which allow reacting to changes on a page without the developer having to write custom Java script) and Plugins (which allow developers to create custom components such as items, regions and processes, that can be re-used across pages and applications). Also added Websheets and RESTful Web

http://en.wikipedia.org/wiki/Oracle_Express_Edition

http://en.wikipedia.org/wiki/PDF

http://en.wikipedia.org/wiki/Flash_charting


Application Express

4.1 August 2011

Notable new features included improved (customized) error handling, use of ROWID for updates, a data upload feature for end-users, and improved WebSheets (a hybrid of a spreadsheet and a Wiki, built using Apex itself).

Application Express

4.1.1 February 2012

Notable new features included new theme (cloudy) and various templates.

Application Express

4.2 October 2012

Notable new features such as application builder for mobile, mobile and responsive themes, and HTML5 support.

Application

Express 4.2.1

December

2012 Bug Fixes.

Application Express

4.2.2 April 2013 Bug Fixes, Improved PDF printing, new Survey Builder packaged application

Advantage: Fast growing technology Web-based Developers familiar with PL/SQL can use the same skill set when developing Apex

applications Easy to create mock-ups Easy to deploy (end user opens a URL to access an APEX application) Scalable (can be deployed to laptops, stand-alone servers, or Oracle RAC installations) Server-side processing and validations Strong and supportive user community (especially Oracle APEX forum) Basic support for group development Free hosting of demo applications provided by Oracle Apex applications can run on the free Oracle Express Edition (XE) database Individual components of an application can be retrieved or identified using SQL

SQL Workshop as a component of Oracle APEX Creating a new Workspace & login inside it. Step 1: Open internet browser & write "http://localhost:8080/apex/apex_admin " into the URL

address bar & click Enter button to open Oracle Apex Admin login page .


Step 2: Application Express Administration Services page would appear, provide the required credential

Username = admin Password = ***********

Step 3: To create a new Workspace click on Create Workspace


Step 4: Fill required fields to create new workspace

Workspace name = BISP Work space ID = optional Workspace = optional Click Next

Step 5: Select schema

Re- use existing schema ? = Yes (if choosing existing schema else choose NO ) Choose Schema Name = HR Click Next


Step 6 : Fill the required fields

Administrator username = ADMIN Administrator Password = oracle First Name = abc last name = optional Email = [email protected] Click to Next

Step 7: Check confirm request & if everything is fine then click Create Workspace.


Step 8: Workspace is created click Done

Step 9: Click on Logout

Step 10: Log out confirmation page is displaying so click on Return to login Page to login inside your workspace .


Step 11:To login inside work space complete required blank fields

Workspace = BISP Username ADMIN Password = oracle Click Login to application express

Step 12: The password for this account must be changed & hence

Enter current Password = oracle Enter new password = #Oracle123 Confirm New Password = #Oracle123 Click on Apply Changes


Step 13: Password Changed successfully now click on Return

Step 14: Enter New Password = #Oracle123 & then click Login to application Express

Step 15: Observe that we have successfully entered inside BISP work space & ready to work on components .


Working with component SQL Workshop : Step 16: Created Workspace named BHEL & logged in inside workspace through it

Step 17:Click on SQL workshop to Create , edit & manage object of Oracle database 11g

Step 18: Now SQL Workspace is again further divided into following components:

Object Browser SQL Commands SQL Scripts Utilities Restful services

Now Click on Object Browser to manage database objects.


[1] Working on Object Browser

Step 19: Inside object browser we can do two things either modify or create following objects inside HR schema , So to Modify these objects click drop down menu located on left pane of the page & select one of the following 1) Tables 2) Views 3) Indexes 4) Sequences 5) Types 6) Packages 7) Procedures 8) Functions 9) Triggers 10) Database Links 11)Materialized Views 12) Synonyms

Step 20: To Create these objects click drop down menu located on Right pane of the page & select one of the following & start creating object inside schema : 1) Tables 2) Views 3) Indexes 4) Sequences 5) Types 6) Packages 7) Procedures 8) Functions 9) Triggers 10) Database Links 11)Materialized Views 12) Synonyms


Creating a Table through Object Browser Step 21: Click SQL Workshop ---> click on Object Browser

Step 22: Now this page will appear so see at the right pane of page & click on create then select table to the drop down menu .

Step 23: Fill all the required field to create table inside HR schema

Table Name = Student Preserve case = leave unchecked

Column Name Type Precision Scale

ROLL_ID NUMBER - 5

NAME VARCHAR2 - 50

EMAIL VARCHAR2 - 50


CONTACT_NUM NUMBER - 10

DOB DATE - -

PHYSICS_MARKS NUMBER - -

CHEMISTRY_MARKS NUMBER - -

MATHS_MARKS NUMBER - -

TOTAL_MARKS_OBTAINED NUMBER - -

Click on Next

Step 24: Choose Not populated select ROLL_ID(NUMBER) as primary key then click NEXT

Step 25: On the constraint page put radio button on Check then click on Next


Step 26: Now before creating table it requests to confirm all the details specially schema & table name so after confirming details click on Create Table to create Student Table

Step 27: Successfully created Student Table into the HR schema & is visible on the left pane under Tables inside Object browser. So for a particular table we can view & modify following: 1) Table 2) Data 3) Indexes 4)Model 5)Constraints 6)Grants 7) Statistics 8) UI Defaults 9)Triggers 10) Dependencies 11) SQL Now these parameters are again sub categorized for example Table consists sub elements are : 1) Add Column 2) Modify Column 3) Rename Column 4) Drop Column 5) Rename 6) Copy 7) Drop 8) Truncate 9)Create Lookup Table Now click Data


Step 28: Since Student Table is Newly created & hence it does not contains data so to insert data into it click on Data --> Insert Row

Step 29: Fill all the required fields to create rows of data .

ROLL_ID = 01 Name = SHIVA PANDEY EMAIL = [email protected] CONTACT_NUM = 9876543210 DOB =23/03/1988 PHYSICS_MARKS = 98 CHEMISTRY_MARKS=95 MATHS_MARKS = 92 TOTAL_MARKS_OBTAINED=285 Then click to Create


Step 30: Similarly complete another row by filling data as shown below then click Create

Now two rows are created successfully


Step 31: Two count Rows in a table click on Data --> Count Rows then it will display total number of rows in a table for example in my case Student table contains number of rows equal to 2 & hence Row Count = 2 .

Step 32: To drop a table click on Table ---> Drop , then follow the steps & drop your table successfully .

Step 33: As we have created Student table we can also like wise create other objects by simply clicking on Create button located at the right side of the page inside object browser .


Creating lookup table Step 34: Open SQL Workshop --> Object Browser --> Then on left side select Table --> Click on EMPLOYEES then under Employees table click on Table then click Create Lookup Table to create a new lookup table

Step 35: Select the column you would like to create a lookup table for. The selected column will become foreign key to the lookup table

Schema =HR Table name =Employees Show = VARCHAR column Types Column JOB_ID- varchar2 Click Next


Step 36: Specify the new table you wish to create. This new table will store a normalized list of values .

Schema =HR Table name =Employees Column to normalize = JOB_ID New Table Name = JOB_ID_LOOKUP New Sequence = JOB_ID_LOOKUP_SEQ Click Next

Step 37: Click Finish


Step 38: Now see that we have successfully created a new JOB_ID_LOOKUP table which is now visible in the tables list s , so on clicking into JOB_ID_LOOKUP we can be able to see Table details . This lookup table contains only two columns one for JOB_ID_ID as primary key & another for JOB_ID .

Step 39: Now open SQL Workshop ---> SQL commands , & write query for look up table

Select * from job_id_lookup ; Then click to RUN


Step 40: Another way to view the data & detail of lookup table is to navigate through Object Browser --> Select Tables --> JOB_ID_LOOKUP --> Click on Data , so from here we can observe that JOB_ID_ID is in a sequence & is unique for every row that's why it is called primary key for this table & foreign key for Employees table from where it is originated .

[2] Working on SQL commands To run sql query for insert , update & retrieve data from oracle database , we have another sub component called SQL commands & Oracle Apex made it feasible by integrating it on apex .

Step 41: Open SQL Workshop -> SQL Commands


look this page will appear as shown below in snap

Step 42: Execute Select Query on Employees table inside SQL Command & click Run to obtain its result .

select first_name from employees where first_name like 'E%' Click RUN & also we have choice to save this query by clicking SAVE tab & can use it

anytime. also select Number of rows want to retrieve


Look result of executed select query i.e this employees table contains only three names starting with 'E' & these are Ellen , Elizabeth , Eleni & Click on Download to download the retrieved data & save it somewhere for future use .

Similarly another select query to query names starting with 'S'

select first_name from employees where first_name like 'S%' Click RUN & also we have choice to save this query by clicking SAVE tab & can use it

anytime. also select Number of rows want to retrieve

Result is shown below :

Likewise we can execute all queries on this SQL Command .

[3] working on SQL Scripts Oracle apex provided facility to run SQL scripts through SQL Script which is a sub component of SQL Workshop .


Create Tables Through Script Step 43: Open SQL Workshop ---> Click on SQL Scripts

Step 44: Click on Upload to upload create table script .

Step 45: Click on Choose File to choose create table script file which is located somewhere in the system.

Step 46: Browse file & select V2_Teams_DB_CREATE file then click Open


Step 47: Now look file is successfully uploaded & hence click on Upload Tab .

Script uploaded message is now displayed .

Step 48: Click on Run icon shown inside indicated red box.


Step 49: A message prompt asking that you have requested to run the following script. Please confirm your request so click Run Now .

Step 50: Click File shown below View Results

Step 51: Check that all statements Processed without error & click download to download detail.


Step 52: Open Object Browser page by clicking into SQL Workshop --> Object Browser, then select Tables from Top Down menu & observe that we have successfully imported tables into HR Schema by simply uploading sql script file

Step 53:Also Created Sequence for various tables so Select Sequences & Click on ATTND_ID_SEQ Now Check Details of Sequence .


Create Triggers Through Script Step 54: Open SQL Workshop ---> Click on SQL Scripts

Step 55: Click on Upload to upload Triggers script .

Step 56: Click on Choose File to choose Triggers script file which is located somewhere in the system.

Step 57 : Browse file & select V2_Teams_TRIGGERS file then click Open

Step 58: Now look file is successfully uploaded & hence click on Upload Tab


Step 59: Script uploaded message is now displayed .



Step 62: Click File shown below View Results



Step 64: Open SQL Workshop ---> Click on Object Browser

Step 65: Select Triggers & click on it


Step 66: List of Triggers are shown now Click on BI ATTENDANCES & Observe all Details of a selected Trigger.

Step 67: Also check that Students Table have no Data so inserting of data can be done through two ways :

Insert data one by one by clicking Insert Rows from Sub menu of Data Inserting Data by uploading script

So i am going to upload data through script into Students table.

Step 68: Click on Upload to upload data insert script .


Step 69: Click on Choose File to choose data Insert script file which is located somewhere in the system.

Step 70: Browse file & select V2_Teams_DB_INSERT file then click Open

Step 71 : Now look file is successfully uploaded & hence click on Upload Tab


Step 72: Script uploaded message is now displayed .



Step 75: Click on File shown below the View Results



Step 77: To check whether data inserted through script is came into Students table , therefore Click Data tab from students table . Data is successfully inserted


Step 78: Check Sequence of this Students Table & Observe that last number of sequence is 5020.

Step 79: Click on Students Table ---> Click on Constraints


Step 80: Constraints contains Sub elements Create , Drop , Enable & Disable. Basically this student table contains one primary key & one foreign key as shown by red boxes . Now to create a new constraint (unique key) click on Create

Step 81: Add Constraints

Constraint Name =UNQ_STDUSERID Constraint Type = Unique


Unique Column1 =STDUSERID(VARCHAR2) Then Click to Next

Step 82: Click on Finish

Step 83: Open Sql workshop --> Object Browser --> Select Tables --> Students --> Constraints Now check here we have successfully created a unique id .

[4] Working On Query Builder We can build queries with the help of query builder which is provided by Oracle Apex. Step 84: Open SQL Workshop ---> Click on Query Builder to open it .


Step 85: Click on DEPARTMENTS table & it will be available at the query builder space then select

the columns which you want to retrieve through query by checking these boxes .& click Run

Step 86: See the Result & click on SQL tab


Step 87: Since we have build Query successfully then next step is to save it for future use .So click Save tab .

Step 88: Give Name = department_sql & click to SAVE

It will immediately display Detail of saved SQL query build into query builder , for example Owner , Name ,Description ,Updated by , Updated which is shown by the red box


Step 89: Open SQL Commands by clicking on SQL Workshop --> SQL commands

Step 90: Click on Saved SQL to run the saved query build into query builder.

Step 91: On clicking Saved SQL it will display all the saved queries so choose one which likely going to execute . For example click on department _sql


Step 92:Select whole query & when it looks blue as shown below Click on Run tab to execute query

Result of Executed Query is shown below :

Step 93:Open SQL Workshop ---> Click on Query Builder to open it


Step 94 : To build complex query in which various tables are involved click on Employees table , JOBs table , JOB HISTORY table & make relation between these tables so check mark the boxes like JOB_ID , MIN_SALARY , MAX_SALARY from JOBS table & START_DATE , END_DATE from JOB_HISTOY & FIRST_NAME , LAST_NAME from EMPLOYEES table & CLICK to Run

Step 95: Click on Results to see the retrieved data.

Step 96: Click on SQL to see build SQL Query , now see we have successfully build complex query through Query Builider


Step 97: Click On Save tab to save build Query .

Step 98: It will prompt for Save SQL so provide the required details

Name = DEMO1 Description = Optional Click to Save

Step 99: Now Query is saved with the Name Demo1 so whenever we need to execute such query use Demo1

[5] Working with Utilities Oracle Apex Provided us a component known as Utilities which further consists of sub components


Query Builder ,Data Workshop , Generate DDL , Methods on Table , User Interface Defaults ,Schema comparison, Object Reports , Recycle Bin . So these sub components performs various tasks so in this document we will work only on Data Workshop . Step 102: Open SQL Workshop ---> Utilities

Step 100: Look at the Various Utilities & Click on Data Workshop to open it

Step 101: So from data workshop we can Load , Unload data & manage Repository so click on Text Data


Step 102: Since we have already created table through script now we have only to load data inside Projects table , so to load data into existing account table choose radio button on Existing table also choose Load From Upload file then click Next .

Step 103:Select the database schema and name of the table you would like to load data into

Table Owner = HR Table Name = PROJECTS Click Next

Step 104: Click on Choose File Then click on Next.

Step 105: Choose Project Data file from your system & then click to Open


Now it is displaying Chosen file

Step 106: Fill all the required files & File & Separator both are mandatory so separator = ,(comma) Click Next


Step 107: This page preview how your data will be loaded . match database column names with column in the data . So choose PROJ_NAME in first column & PROJ_CLIENT into second column then click to Next

Now data imported & hence it is showing Text Data Load Repository


Step 108: Open SQL Workshop ---> Object Browser ---> Tables ---> Projects---> Data . Observe that table is containing imported data & hence we have successfully loaded data into Projects table through utilities , in a similar way we can unload tables from schema by using utilities .

oracle apex-hands-on-guide lab#1

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