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Peoplesoft

Dataintegrity and internet architecture

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Peoplesoft

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  1. Data Organization Presenter PeopleSoft Technical Guru

  2. Relational Databases • A relational database is a collection of data items organized as a set of formally-described tables from which data can be accessed or reassembled in many different ways without having to reorganize the database tables. • It stores all its data inside tables, and nothing more. All operations on data are done on the tables themselves or produces another tables as the result.

  3. Relational Databases • Table Structure • A table is a set of rows and columns. • It has a set of tables containing data fitted into predefined categories. • Each table (which is sometimes called a relation) contains one or more data categories in columns. Each row contains a unique instance of data for the categories defined by the columns.

  4. Relational Databases • Normalization • Normalization is the process of efficiently organizing data in a database. • Advantages of the normalization process • Eliminating redundant data (for example, storing the same data in more than one table) • Ensuring data dependencies make sense (only storing related data in a table).

  5. Relational Databases • Key Fields • Key fields uniquely identify each row of data on a relational database table. • If there can be only one ID per student, then the key would be STUDENT_ID on the PSU_STUDENT_TBL. • If a student can have more than one recorded skill and more than one degree, then we would need two additional tables, each with STUDENT_ID as a key plus at least one more key field to uniquely identify rows of data.

  6. Relational Databases • Parent Child Tables • During normalization, the breakdown of data based on a single field that occurs multiple times indicates a parent/child relationship . • The table holding basic Student information and the tables constructed to hold data about a Student’s Experience and a Student’s Educational background represent parent/child relationships. • A child table must have all the key fields of the parent table in the same order plus at least one additional key field.

  7. Relational Databases • Parent Child Tables

  8. Data Model • It is a diagram of the underlying database tables and their relationships. • It is often helpful to have a map illustrating the various tables and their interrelationships

  9. SYSOBJECTS SYSCOLUMNS PSRECDEFN PSPNLDEFN PS_PSU_STUDENT_TBL PS_PSU_INSTR_TBL Relational Database, Metadata and PeopleSoft

  10. Relational Database, Metadata and PeopleSoft • System Catalog • System catalog tables are analogous to a table of contents for a book, or to File Allocation Tables on a hard drive. The structure and table names vary depending on which RDBMS is being used, but the function is the same. The system catalog tables keep track of all of the objects that reside in the database instance, including non - PeopleSoft systems e.g. SYSOBJECTS, SYSCOLUMNS

  11. Relational Database, Metadata and PeopleSoft • PeopleTools Tables • PeopleTools tables hold metadata about the PeopleSoft application that is installed on the database. The PeopleTools tables contain the structure that the applications use to define the user interface. The structure of the tables is the same for all applications. Each application enters data into the PeopleTools tables when it is installed. PSDBFIELD - fields in application data tables PSRECDEFN - application data table s, indexes, views PSPNLDEFN - Values used to generate the HTML pages received by the browser PSPRSDEFN - Contents of the portal registry, which builds the user navigation PSXLATITEM - Values used to validate data for specific fields

  12. Relational Database, Metadata and PeopleSoft • Application Data Tables • The Application Data tables contain data entered for use by your organization. The specific tables and their structure are determined by the application installed or by the definitions you create as a part of your development • The naming convention used for Application Data tables is PS_*. e.g. PS_PSU_STUDENT_TBLPS_PSU_INSTR_TBL

  13. Query Analyzer • SQL “SELECT” Syntax • SELECT [COLUMNS] FROM [TABLE_NAME] • SELECT [COLUMNS] FROM [TABLE_NAME] WHERE [COLUMN1] = [CONDITION] • SELECT [COLUMNS] FROM [TABLE_NAME] WHERE [COLUMN1] = [CONDITION] ORDER BY [COLUMNS] [DESC/ASC] • SELECT [COLUMNS],GROUP FUNCTIONS FROM • [TABLE_NAME] WHERE [COLUMN1] = [CONDITION] GROUP BY [COLUMNS] • Group Functions – Max/Min/Count/Sum

  14. Query Analyzer • SQL INSERT/UPDATE/DELETE Syntax • INSERT INTO [TABLE_NAME] [COLUMNS] VALUES[VALUE1,VALUE2…] • UPDATE [TABLE_NAME] SET [COLUMN] = [VALUE] WHERE [COLUMN1] = [CONDITION] • DELETE FROM [TABLE_NAME] WHERE [COLUMN1] = [CONDITION]

  15. Query Analyzer

  16. PIA – Peoplesoft Internet Architecture

  17. PeopleSoft Internet Architecture (2 TIER Connectivity) Database Server Client ODBC CONNECTIVITY

  18. PeopleSoft Internet Architecture(2 TIER Connectivity) • Advantages • Simpler architecture requiring only client workstation and database server components to be installed. • System administrators are not required to invest time learning application server administration. • No need to consider purchasing either an additional machine or upgrading an existing machine to use as an application server.

  19. PeopleSoft Internet Architecture: Definition • PIA stands for PeopleSoft Internet Architecture. • It is the runtime architecture used to deploy and execute • the pure Internet applications of PeopleSoft 8. Its called pure since it follows the thin client model • Executes the applications built with PeopleTools development environment.

  20. Features of PIA • Pure Internet • Server-centric • Component-centric • Four-tier Architecture

  21. Advantages of PIA Over Client/Server • Thin Client: • No executables on the client side – Low Cost • No Processing at client side • Network Protocol – The protocol used is HTTP • Security - SSL security can be implemented in PIA

  22. PeopleSoft Internet Architecture (3 TIER Connectivity)

  23. PeopleSoft Internet Architecture(3 TIER Connectivity) • Advantages • Reduced network traffic. • Improved WAN performance. • Reduced maintenance of client workstation configuration, since database connectivity is not required on the client. • Enabling Web Client connections • Ability to scale the system, as needed, to meet rising user demands by reconfiguring application servers, by installing application server(s) on more powerful machines, and by using multiple application servers

  24. Web Browser • Uses HTTP protocol • Receives only: • HTML / XML • Java script • Cookie Application server Web server DB server Browser HTTP/HTTPS Jolt/Tuxedo SQL

  25. Web Server • Web services – HTTP, XML, SOAP, WSDL, and UDDI • Servlet Engine • Java Servlets: • Page Servlets: Content Retrieval and Page Assembly • Portal Servlets: Content Retrieval and Page Assembly • Integration Gateway Servlets: Listener Connectors • Report Repository Servlets Application Server Web Server DB Server Browser Jolt/Tuxedo SQL HTTP/HTTPS

  26. Web Server (Contd.) • This figure depicts the PIA architecture. • Client request are made through the web browser. • These requests move to the Web Server • From the Webserver the request is passed to the • Application server which communicates with the • database. • The response to request follows the reverse path

  27. Application Server • It is the “Heart” of PIA - contains all application logic / HTML / XML generation • Supports Lightweight Directory Access Protocol (LDAP) integration LDAP Application Server Web Server Browser DB Server HTTP/HTTPS Jolt/Tuxedo SQL

  28. Application Server Domain • Collection of server processes, supporting processes, and resource managers • A domain advertises a set of “services” (such as build a page and save a page) • Process scheduler also built around “domains” • You can have more than one domain per machine (server) • Each domain only connects to one database. • Multiple domains can connect to the same database.

  29. APPLICATION SERVER WEB SERVER HR Domain BROWSER HR Database Application Server Domain (Contd.) Example: One domain on one application server machine.

  30. APPLICATION SERVER FS Database FS Domain WEB SERVER BROWSER HR Domain HR Database Application Server Domain (Contd.)

  31. Application Server Domain (Contd.) • Domain: Collection of server processes, supporting processes, and resource managers • Server Processes – Manages different types of requests that reach the application server • Tuxedo/JOLT – Jolt provides the connection between the Web Server and App server. Tuxedo is BEA software that gears the PS App Server

  32. Application Server Domain (Contd.)

  33. Database Server • Consists of application data and metadata • Contains three types of PeopleSoft tables: • System Catalog Tables • PeopleTools Tables • Application Data Tables Application server Web Server DB Server Browser SQL HTTP/HTTPS Jolt/Tuxedo

  34. Batch Server RDBMS Browser Web Server App Server SQL Batch Server (Process Scheduler) • Components of Process Scheduler: • Process Scheduler Server Agent • Distributed Agent The Process Scheduler is used to schedule the processes in PeopleSoft. It can be consider as a part of the Application Server and communicates with the DB directly.

  35. Logging in PIA • Sign In • User Id • Password • Navigate to a Component • Page Layout • Header • Menu Pagelet • Target Area • Searching Through PIA

  36. PIA URL Web Server Component Menu PS Portal Servlet Portal Node App Server Domain Ref Type

  37. Hot Keys

  38. Access Keys

  39. Question???

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