SAP HR or SAP Human Resources or SAP HCM or SAP Human Capital Management or SAP HRMS or SAP Human Resources Management System is one of the largest modules in the SAP R/3

SAP R/3

SAP R/3 is the former name of the main enterprise resource planning software produced by SAP AG. It is an enterprise-wide information system designed to coordinate all the resources, information, and activities needed to complete business processes such as order fulfillment or billing.- History of...

 system which consists of many sub modules like:

• Organizational Management
• Personnel Administration
• Recruitment
• Time Management
  Time management
  Time management is the act or process of exercising conscious control over the amount of time spent on specific activities, especially to increase efficiency or productivity. Time management may be aided by a range of skills, tools, and techniques used to manage time when accomplishing specific...
  
  
• Payroll
• Compensation Management
• Personnel Cost Planning
• Budget Management
• Personnel Development
• Training & Event Management
  Event management
  Event management is the application of project management to the creation and development of festivals, events and conferences.Event management involves studying the intricacies of the brand, identifying the target audience, devising the event concept, planning the logistics and coordinating the...
  
  
• Travel Management
• Environmental Health
  Environmental health
  Environmental health is the branch of public health that is concerned with all aspects of the natural and built environment that may affect human health...
  
   & Safety.

Many of these sub modules are further sub divided into many components for e.g. Time Management is further divided into Time Administration, Shift Planning, Incentive Wages, and Time Sheet. There are further sub-division of each submodule in SAP.

Single Sign-On

SAP Human Resource Management Systems allow for Single Sign-On

Single sign-on

Single sign-on is a property of access control of multiple related, but independent software systems. With this property a user logs in once and gains access to all systems without being prompted to log in again at each of them...

 through SAP Logon Ticket

SAP Logon Ticket

SAP Logon Tickets represent user credentials in SAP systems. When enabled, users can access multiple SAP applications and services through SAPgui and web browsers without further username and password inputs from the user...

s and x.509

X.509

In cryptography, X.509 is an ITU-T standard for a public key infrastructure and Privilege Management Infrastructure . X.509 specifies, amongst other things, standard formats for public key certificates, certificate revocation lists, attribute certificates, and a certification path validation...

 certificates. Certificates allow for the usage of Secure Network Communications

Secure Network Communications

Secure Network Communications is a software layer in the SAP system architecture that enables the use of stronger authentication, encryption and single sign-on mechanism. SAP provides SNC for server to server communications only...

 (SNC) and Secure Socket Layer (SSL).