Building Database-Centric Web Applications Using. Oracle HTML DB

Transcription

1

2 Building Database-Centric Web Applications Using Oracle HTML DB

3 Wayne Abbott Practice Manager, Oracle University

4 Session Objectives Overview of Oracle HTML DB Identify advantages of Oracle HTML DB for building applications List h/w and and s/w requirements List key features Identify components and capabilities

5 What Is Oracle HTML DB? New feature in Oracle Database 10g Browser-based application development tool that resides in the Oracle database Environment to develop browser-based Web applications that are database-centric

6 Benefits of using HTML DB Easy-to-use application development environment Short learning curve for SQL and PL/SQL programmers Simple, self-contained architecture Flexible look-and-feel options provided by themes and templates Platform-independent environment

7 Tracking Application (Sample 1)

8 Business Intelligence Application (Sample 2)

9 Text-search Application (Sample 3)

10 Hardware and Software Requirements Oracle or later (Standard or enterprise edition) Database Minimum 512 MB memory Oracle HTTP Server with mod_plsql Web server Client Web browser IE 5.5 and above, Netscape 7.0 and above, Mozilla 1.2

11 HTML DB Architecture Oracle HTML DB engine Browser Oracle HTTP Server with mod_plsql Metadata repository (Application definition) Application schema Oracle Database 10g

12 HTML DB Architecture DB Server Oracle HTML DB engine Browser Oracle HTTP Server with mod_plsql Metadata repository (Application definition) Application schema Oracle Database 10g

13 Defining Roles Oracle HTML DB Oracle HTML DB administrator Developer Workspace administrator End user

14 Understanding Workspaces A B Developers C Wkspc1 Wkspc2 Wkspc3 Oracle HTML DB workspaces OE SH HR Database schemas

15 Logging In to the Workspace (Developer)

16 The Developer Interface

17 Development 4 Tools-in-1

18 4 Tools-in-1 Development Administration

19 Data Workshop Data Workshop

20 SQL Workshop SQL Workshop

21 Application Builder Application Builder

22 Data Workshop Data Workshop

23 Data Workshop Export Oracle Database 10g Import data Import Exported data

24 Importing Text Data

25 Importing Spreadsheet Data

26 SQL Workshop SQL Workshop

27 SQL Workshop Oracle Database 10g SQL Workshop Browser Manage database

28 Navigating Through SQL Workshop

29 Navigating Through SQL Workshop Breadcrumb menu

30 Navigating Through SQL Workshop Breadcrumb menu Task list

31 Navigating Through SQL Workshop Breadcrumb menu Task list Page-level help

32 SQL Command Processor

33 Creating DB Objects (gui) 2

34 Application Builder Application Builder

35 Viewing the Applications in the Workspace List of applications

36 Developing the User Interface You can rapidly design the user interface for your application by using: Reports Forms Charts Wizards Calendars Trees

37 Page Application Builder Terminology Application Navigation Region Region Item Button

38 Business Intelligence Application (Sample 2)

39 Business Intelligence Application (regions)

40 Business Intelligence Application (shared compnents)

41 Creating an Application From the beginning Based on an existing application Based on an existing table Demonstration application Based on spreadsheet From an application export file

42 Creating an Application from the Beginning Steps Name and authentication

43 Creating an Application from the Beginning Steps Tab style

44 Creating an Application from the Beginning Steps Page names Tab names

45 Creating an Application from the Beginning Steps Select theme

46 Creating an Application from the Beginning Steps Confirm selections

47 Creating an Application Based on a Spreadsheet Steps

48 Creating a New Region

49 Creating Interactive Items

50 Input Items (form) Text field Pop-up Key LOV Date Picker Text area Select list Radio group

51 Creating a Report Linked to a Form Report Form

52 Steps Master Detail Form

53 Building & Testing the application (WYSIWYG) Developer Bar

54 How does it know? Requests a Web page Request from browser to Web server Connection 1 Response from Web server to client Connection lost Web server responds Requests a new Web page New connection to Web server established Connection 2 Connection from Web server to client Web server responds

55 How Does Oracle HTML DB Implement Session State? Oracle HTML DB maintains session state implicitly. Oracle HTML DB (Session store) User 1 User1 (Session1) State User2 (Session2) State User 2 Database session

56 Understanding Oracle HTML DB URL Syntax Syntax: Session Example:

57 Viewing Session State 2 1 Session state Initial state

58 Referencing Item Values and Getting Session State You can reference session state by using: Environment SQL PL/SQL Static text Syntax Use bind variable syntax. Use bind variable syntax or v function. Use &item name followed by period (.). Example :MY_ITEM :MY_ITEM v( MY_ITEM ) nv( MY_ITEM ) &MY_ITEM.

59 Page Processing and Page Rendering Assembles page components Oracle Database 10g Performs computations, processes, validations, branching HTML DB engine Show the page (Page Rendering) Accept the page (Page Processing)

60 Overview of Templates Templates define how the pages or the page components of an application are displayed. You can use the following templates: Page Region Report List Label Menu Button

61 Themes

62 Securing Your Application AUTHENTICATION AUTHORIZATION

63 Establishing User Identity Through AUTHENTICATION User 1 User 2 Establish user identity from login page Establish user identity from login page Application

64 Authentication Schemes (choices)

65 Implementing Security Through AUTHORIZATION EMPLOYEES EMPLOYEENAME JOB User 1 User 2 MANAGER Authorized to view all columns of a report HIREDATE SALARY Denied access to the SALARY column of a report

66 Workspace Administration Administration

67 Creating a New User 1 2

68 Monitoring Workspace Utilization

69 Deploying Your Application by Using Oracle HTML DB Utilities Export Application and related files Import Install Application (Development) Application (Production)

70 Exporting Your Application

71 Importing Your Application

72 Free website Learn more Sign up for a free workspace #