Oracle Form Builder

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Information about Oracle Form Builder
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Published on November 7, 2008

Author: profit2m

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Forms - An Overview of Oracle Form Builder v.6.0 : Forms - An Overview of Oracle Form Builder v.6.0 Abhishek Parag Prashant Arun Agenda : Agenda What Is Oracle Form Builder? Forms Concepts - What is a Form? The Forms Application References What Is Oracle Form Builder? : What Is Oracle Form Builder? Component of Oracle Developer/2000 Forms Reports Graphics Application builder Event-driven applications Forms - The Basic Idea : Forms - The Basic Idea Are used to create applications to enter, access, change, or delete data from an Oracle database in an online, form-based environment. Forms provides many objects for developing an effective application module. Coupled with the concept of user extensibility, Forms can be used to serve virtually every online need in an Oracle database environment. Forms Concepts The Big Picture : Forms Concepts The Big Picture Triggers and/or default processes User actions Internal events Database Application State Forms Concepts : Forms Concepts Events Processes Triggers Forms Concepts : Forms Concepts Events Things that happen External Events User Interaction; Mouse, Keyboard, Menu Internal Events Timers Processing steps for which triggers can be set Initiate Processes No Events? No Processing! Forms Concepts : Forms Concepts Processes Pre-programmed default behaviour What Forms DOES, for example; Navigation Transaction Processing Validation Query Processing Master-Detail coordination Series of Internal Events Forms Concepts : Forms Concepts Triggers Fired when Internal/External events occur Replace, supplement or initiate default processing Initiate “External” events, to make Forms behave as if user performed action E.g. Simulate User key-press Triggers : Triggers Trigger Forms trigger Database trigger Triggers : Triggers Forms Trigger Fires in response to Forms Events Database Trigger Fires in response to Database Events THESE ARE COMPLETELY INDEPENDENT OF EACH OTHER!!! The Forms Application : The Forms Application Form Builder builds Forms, Menus and Libraries Application consists of at least one Form Can also include one or more Menu and Library modules Oracle provides default Menu File Types : File Types Forms Modules .FMB; Forms Source .FMX; Forms Executable Menu Modules .MMB; Menu Source .MMX; Menu Executable Libraries .PLL; PL/SQL Source and Executables .PLX; PL/SQL Executable Only The Forms Application What You See : The Forms Application What You See exit enter File Edit View Query Block Record Insert Help Whatever Are you really sure you want to do this? Canvas View Control Item Base-Table Item Menu Window Yes No The Forms Application : The Forms Application What you see; Window Menu Canvas/View Items Base-block items Control-block items Database records Forms Components : Forms Components Highest Level of Hierarchy - Forms - Menu - Built-in Packages - Database Objects Forms Components : Forms Components Windows - Displays canvases. - Form can have multiple windows. - Modal; user must respond and dismiss window before doing anything in another window. - Modeless; user can move to another window. Forms Components : Forms Components Canvas-Views - Visual element of Forms. This is how you display all those Items. - Canvas; Background on which text and items are placed. - View; Visible portion of canvas. - Form can have multiple canvases. - Canvases can be stacked, scrolled. Forms Components : Forms Components Blocks - Base-Table Block corresponds to Database Table; set of items representing database table columns. An ‘instance’ of a Base-Table Block corresponds to a Database Record. - Control Block is usually a collection of control items (e.g. Buttons, Check-Boxes, Radio Groups), but can also be collection of Display Items (read-only text), Text Items (‘variables’), images, etc. Forms Components : Forms Components Block Properties Forms Components : Forms Components Items - Base-Table Items are text items that correspond to Database Columns. Forms creates them automatically. - Control Items can be Buttons, Check-Boxes, Radio Groups, Display Items (read-only text), Text Items (‘variables’), images, etc. Forms Components : Forms Components Item Properties Forms Components : Forms Components Visual Attributes - Collection of display properties. - Refer to Named Visual Attribute in Items to standardise appearance. Change in NVA will affect all Items referring to it. Property Classes - Collection of ANY properties. - When items refer to Property Class, only properties that make sense for that item will be used. Forms Components : Forms Components Triggers - At Form, Block or Item level - Lower level triggers fire before higher level triggers - If same trigger-type occurs at different levels, only lowest will fire Triggers : Triggers Can be coded at Form, Block, and/or Item Level Some Triggers apply to multiple levels of hierarchy, others are specific When creating new trigger, List of Values presents list of appropriate triggers Each Trigger-type executes only once Lowest level Triggers fired first Forms Component : Forms Component Alerts - Window that displays message - Modal; User must respond - One, two or three buttons - Three types; - Stop (stop sign) - Caution (exclamation) - Information (‘i’ symbol) - Use SHOW_ALERT built-in function Forms Components : Forms Components LOVs - Allows user to select from specific set of values. - Displays Record Group. Forms Components : Forms Components Editors - Editor; simple text-editor dialog box for entering lines of text into Text Item. - Can create editors with different appearances for different text fields. Forms Components : Forms Components Parameters - Used as a Form variable. - Pass values between Forms. Forms Components : Forms Components Program Units - PL/SQL Procedures and Functions used in this Form. Forms Components : Forms Components Attached Libraries, Libraries & Built-in Packages - PL/SQL procedures and functions. - Attached Library; Reference collected routines. - Library; Maintain and reference collected routines. - Built-in Packages; Oracle supplied procedure and functions. Forms Components : Forms Components Object Groups - Package reusable objects for later copying or reference. - E.g. Your Form includes an alarm clock to wake the user after ten minutes inactivity. This includes Triggers, Procedures, a Window, some graphics, etc. You can package these objects together to conveniently include this functionality in other forms. Tour of Form Builder : Tour of Form Builder Starting forms Virtual session Connecting to the database What Is Forms Looking For : Client What Is Forms Looking For Forms Runtime Forms Server (Compiled Objects) Database Registry FORMS_PATH Connect References : References On-line help Oracle Developer/2000 Handbook (2nd. Ed.) Robert J. Muller, Oracle Press Oracle technology network (http://TechNet.Oracle.Com) THANK YOU : THANK YOU

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