people soft basics
TRANSCRIPT
Data OrganizationData Organization
PresenterPresenterPeopleSoft Technical GuruPeopleSoft Technical Guru
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.
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.
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).
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.
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.
Relational Databases• Parent Child Tables
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
Relational Database, Metadata and PeopleSoft
SYSOBJECTSSYSCOLUMNS
PSRECDEFNPSPNLDEFN
PS_PSU_STUDENT_TBLPS_PSU_INSTR_TBL
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
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
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
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
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]
Query AnalyzerOnline Page Action
Command
Resulting SQL
Retrieve data from the search page in an Update mode. SELECT
Use the Add action to add a new search key to a control table INSERT
Use Alt + 7 (Row Insert) to add a row with an existing search key to a
transaction tab le in an Update mode.
INSERT
Save a page. COMMIT
Use Alt + 8 (Row Delete) in an Update mode. DELETE
Undo changes if errors occur during PeopleCode processing at Save time
ROLLBACK
Modify data on existing rows in an Update mode UPDATE
PIA – Peoplesoft Internet PIA – Peoplesoft Internet ArchitectureArchitecture
Client
Database Server
ODBC CONNECTIVITY
PeopleSoft Internet Architecture
(2 TIER Connectivity)
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.
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.
• Pure Internet• Server-centric• Component-centric• Four-tier Architecture
Features of PIA
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
PeopleSoft Internet Architecture
(3 TIER Connectivity)
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
Web Browser
Application
server
DB
serverWeb
server
Browser
HTTP/HTTPS Jolt/Tuxedo SQL
• Uses HTTP protocol
• Receives only:
– HTML / XML
– Java script
– Cookie
Web Server
Application
Server
DB
Server
Web
Server
BrowserHTTP/HTTPS Jolt/Tuxedo SQL
• 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
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
Application Server
Application Server
DB ServerWeb Server
BrowserHTTP/HTTPS Jolt/Tuxedo SQL
LDAP
• It is the “Heart” of PIA - contains all application logic / HTML / XML generation
• Supports Lightweight Directory Access Protocol (LDAP) integration
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.
Application Server Domain (Contd.)
BROWSERBROWSERWEB
SERVER
WEB SERVER
APPLICATION SERVER
APPLICATION SERVER
HRDatabase
HRDatabase
HRDomai
n
HRDomai
n
Example: One domain on one application server machine.
Application Server Domain (Contd.)
BROWSERBROWSER WEB SERVER
WEB SERVER
APPLICATION
SERVER
APPLICATION
SERVER
HRDatabase
HRDatabase
HRDomai
n
HRDomai
n
FSDomai
n
FSDomai
nFS
Database
FSDatabase
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
Application Server Domain (Contd.)
Database Server
DB ServerWeb
Server
Browser
HTTP/HTTPS Jolt/Tuxedo SQLApplication
server
• Consists of application data and metadata• Contains three types of PeopleSoft tables:
– System Catalog Tables– PeopleTools Tables– Application Data Tables
Batch Server (Process Scheduler)
Browser Web Server
Batch Server
App Server
RDBMS
SQL
• Components of Process Scheduler:– Process Scheduler Server Agent– Distributed AgentThe 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.
Logging in PIA
• Sign In• User Id• Password
• Navigate to a Component
• Page Layout• Header• Menu Pagelet• Target Area
• Searching Through PIA
PIA URL
Web Server
PS Portal Servlet
App ServerDomain
Portal
Node
Ref Type
MenuComponent
Hot Keys
Access Keys
Question???