Pretius Oracle Apex Primer
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This presentation contains distilled information regarding Oracle Application Express (Apex). It'll give you general overview of the technology and help you start working with it.
![Sample schedule of conversion project
47
Process / Progress [%] 10 50 100
Application deployment
Validation, processes, etc.
Adding JS/AJAX
Additional forms
UI design
APEX app creation
Component selection
Forms sources conversion](https://image.slidesharecdn.com/pretiusoracleapexprimer-150323083625-conversion-gate01/85/Pretius-Oracle-Apex-Primer-47-320.jpg)
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Pretius Oracle Apex Primer
- 1. HOW TO GET STARTED WITH ORACLE APEX? ORACLE APEX PRIMER Przemysław Staniszewski [email protected] https://twitter.com/pstaniszewski
- 2. AGENDA 2 What is Oracle Apex? Working with APEX Sample use-cases Architecture Integration Oracle Forms migration
- 3. WHAT IS ORACLE APEX? 3
- 4. What is Oracle APEX? 4 APplication EXpress Rapid Application Development tool Uses Oracle DB and PL/SQL Focused on the web - from development to usage Included in the Oracle DB license (even the free XE version so you can try it out or even use for internal projects without extra cost) Available on premise and in the cloud Check it out at http://apex.oracle.com And now, a short story …
- 6. Implement your business logic… 6
- 7. Implement GUI (Graphical User Interface) … 7
- 8. Implement GUI (Graphical User Interface) … 8
- 9. APEX application architecture 9 Application layer Web interface Business logic Data Solution APEX PL/SQL (API) Tables / Views
- 10. APEX application architecture 10 Solution APEX PL/SQL (API) Tabele / Widoki Calls Fetches SQL, PL/SQL HTML, Javascript
- 11. Why APEX? 11 Fast and simple web app development Ease of administration and configuration Flagship Oracle product Everything is in the database Integrates well with other technologies (web services, db links, …)
- 13. How to become an APEX developer? 13 Working environment: Workstation with a web browser (just it!) Basic skills required: SQL PL/SQL Extra skills that will help along the way: HTML, JavaScript, CSS APEX API Auxiliary knowledge like Web Services, SOAP, SPA
- 14. What do we get „out of the box”? 14 Reports Forms Charts Calendar Templates Validations Dynamic Actions / AJAX Computations Responsive Web Design Web Services Email Services Translation Services Plug-Ins Authentication Authorization Session State Management Logging & Monitoring
- 16. Types of applications 16 Database apps Built from scratch Imported (scripts, Oracle Store, Cloud) Migrated from MS Excel/MS Access/Oracle Forms Websheet Allows creating an app even by people who don’t know „how to sql” WIKI-type app
- 17. Region types 17 Report Classic Interactive Web Service-backed Forms Charts Others (e.g. basic HTML – like in any Content Mgmt. System)
- 18. Interactive reports 18 Simple modification by end-users (calculated columns, aggregations, highlighting, charts) Simple sharing of new / modified reports by end-users
- 19. Chart types 19 HTML 5, JS* i Flash; Various built-in chart types available: Bar, pie, line, point, candlestick Counters Gantt’s chart Maps
- 20. 20
- 22. Typical use-cases 22 Data-driven apps Advanced apps which present and modify data Reporting apps Present data in a user-friendly manner Access replacement Migration of MS Access based apps Excel sharing Migration of Excel-driven management to a web application Oracle Forms Evolution Forms apps migration
- 23. ARCHITECTURE 23
- 24. Architecture 24 APEX is installed in the database APEX internals are tables and PL/SQL All application data and metadata are stored in the database
- 26. Architecture - engine 26 Generates and processes web pages Each web query opens and closes a database connection Database sessions are NOT dedicated per each web user Manages the session Provides Authentication Authorization Forms and pages navigation and communication Validation
- 27. Architecture – app structure 27 Single database instance Single APEX instance Multiple users Multiple, independent apps
- 28. Architecture - users 28 APEX administrator Workspace administrator Developer End users Internal (APEX) External (e.g. LDAP)
- 29. Security 29 APEX is just as secure as the rest of the environment: database and operating system APEX addresses common web attacks SQL injection XSS (cross-site scripting) APEX has built-in session protection APEX is able to use Oracle Fine Grained Access Control (VPD)
- 30. Security 30 Authentication LDAP (e.g. MS Active Directory) Oracle SSO SSO APEX (internal) Custom Database structure Authorization Schemes using custom PL/SQL LDAP Can be bound to single web element (button, region, navigation, form, etc.)
- 31. Performance and scalability 31 UK’s Ministry of Education – teacher management app 2.000.000 page views / month 180.000 users 30.000 new registrations / month 2.000 moderators and administrators 24 months of uptime 0 APEX-related errors
- 32. APEX application maintenance 32 Test Production DEV UAT PROD SVN, GIT Users Objects Files Application
- 33. INTEGRATION 33
- 35. Other technologies integration 35 JavaScript (jQuery, modernizer, AngularJS, etc.) PL/SQL (PL_FPDF, PL_EXCEL) Web Service Java (e.g. Jasper, Coocon) HTML 5 CSS (e.g. Bootstrap) Flash BI Publisher
- 36. JavaScript integration 36 Frameworks: jQuery, jQuery UI, jQuery Mobile Modernizer, AngularJS Plug-ins Excel like reports Charting: HighCharts JS + CSS (Bootstrap) = Responsive Web Design
- 37. Web Service integration 37 Accessing remote WS: Reports, variables values, forms SOAP RESTful Publishing Reports created in APEX available through REST Ease of creating using wizards and PL/SQL API
- 39. Why migrate Forms to Apex? 39 Web-enabling of database driven applications Easy distribution (web based app, no need to install anything besides web browser) Easy integration with other company web applications Adding new channel of access for end-users – mobile Finer access control Modern web UI Lowering your TCO (you don’t need Oracle Application Server anymore) Easy Team Development Built in tools for issue tracking, auditing and lots of other utilities that are available out of the box
- 40. Migration advantages 40 Native HTML support JavaScript and other standard web technologies Easy UI customization Better decomposition of common elements which can be used across multiple applications Easily extensible environment through plugins
- 41. Migration – what NOT to expect? 41 It is more of a conversion than migration! We don’t emulate Oracle Forms, we convert them to a web app: UI of forms and reports will look & feel different (better ) Specific functions will work differently Navigation App structure Communication with the end-user, keyboard shortcuts, etc. Migration / conversion will not be magical and automatic It’s not simple (but none of the things worthwhile are)
- 42. Migration – what to expect? 42 Regular company project – takes time & resources Building web application which uses as much as possible of the „old” business logic
- 43. APEX vs Forms/Reports (v. 10, v. 11) 43 Area Forms APEX Architecture Metadata stored in „.fmx” files Metadata stored in db tables Programming language PL/SQL on both client and server PL/SQL on serverside Database connection Fixed Dynamic UI programming Java (client, browser) HTML, JS, CSS (browser) Application modules Windows/Canvas/Block Pages/Regions Client control Triggers JavaScript Charts BI Beans HTML, JavaScript, Flash
- 44. How to carry out a conversion project? 44
- 45. Oracle APEX Forms Converter 45 Tool to manage the conversion process Time & task management Forms component overview Automatic conversion of basic components Pages, forms, reports (single, master-detail, editable) Automatic conversion will not happen for The whole application Forms UI Forms-specific components (Trigger, Program Unit, libraries itp.)
- 46. APEX – conversion project creation 46 Creation of „Forms Migration” project in Migrations section Upload of previously created XML and PLD files (those files will be created by Forms Converter tool)
- 47. Sample schedule of conversion project 47 Process / Progress [%] 10 50 100 Application deployment Validation, processes, etc. Adding JS/AJAX Additional forms UI design APEX app creation Component selection Forms sources conversion
- 48. Oracle Apex - summary 48 Rapid development of web- enabled database driven apps Advanced web charting and reporting Mobile ready UI designEasy team-work & cooperation Full control of data and visualisation
- 49. Oracle Apex - summary 49 Cons – Oracle standard – Debugging (should be better in Apex 5.0) Pros + Web 2.0 out of the box + Scalability + Security + Rapid development and deployment + Low TCO + Technical & community support + Oracle standard
- 50. THANK YOU! Przemysław Staniszewski [email protected] https://twitter.com/pstaniszewski 50 Want to get more information on Oracle Apex? Follow us on: Twitter - https://twitter.com/PretiusSoftware FB - https://www.facebook.com/pretius LinkedIn - https://www.linkedin.com/company/pretius