What is persistence layer in SAP EP-PIN - Portal Infrastructure?

SAP Term: persistence layer

• Component: EP-PIN

• Component Name: Portal Infrastructure

• Description: Generic term used to refer to the collection of repositories used by all the components of SAP Enterprise Portal to store persistent data, that is, data that can be retrieved after any internal memory mechanism is cleared. This includes the repository database, the Portal Content Directory PCD, and the Portal LDAP directory.

Smart SAP Assistant

• Key Concepts: 
  The persistence layer is a component of the SAP Enterprise Portal (EP) Platform Infrastructure (PIN) that stores and manages data. It is responsible for storing and managing the data that is used by the portal applications. It also provides an interface for accessing and manipulating the data. 
  
  How to use it: 
  The persistence layer can be used to store and manage data for portal applications. It provides an interface for accessing and manipulating the data, as well as providing a secure environment for storing the data. The persistence layer can also be used to store user preferences, such as language settings, or to store application-specific data. 
  
  Tips & Tricks: 
  When using the persistence layer, it is important to ensure that the data is stored securely and that access to the data is restricted to authorized users. Additionally, it is important to ensure that the data is backed up regularly in order to prevent any loss of data due to system failure or other unforeseen circumstances. 
  
  Related Information: 
  The persistence layer is part of the SAP Enterprise Portal Platform Infrastructure (EP-PIN). Other components of EP-PIN include the portal runtime, portal services, and portal security. Additionally, there are several other components of SAP Enterprise Portal that can be used in conjunction with the persistence layer, such as the portal content management system (PCMS) and portal application development framework (PADF).