Metabase > Metabase Assembly Interfaces

Metabase Assembly Interfaces

	Interface	Brief description
	IAccessAttributeValue	The IAccessAttributeValue interface is used to work with values of access attribute.
	IAccessControlEntry	The IAccessControlEntry interface contains properties of an additional parameter of a security object.
	IAccessControlList	The IAccessControlList interface contains properties and methods of a collection of additional parameters of a security object.
	IAccessElement	The IAccessElement interface is used to work with element access permissions.
	IAccessElementsIterator	The IAccessElementsIterator interface is used to move by access elements in hierarchical view.
	IAccessObjectSecurity	The IAccessObjectSecurity interface is used to work with the access policy to the object.
	IAccessToken	The IAccessToken interface contains properties of the mandatory access control.
	IAssembly	The IAssembly interface contains properties of the Assembly development environment object.
	IAuditFilter	The IAuditFilter interface contains properties and methods of a filter of access protocol of security manager.
	IAuditFilterCondition	The IAuditFilterCondition interface contains properties of filter conditions of access protocol.
	IAuditFilterObject	The IAuditFilterObject interface contains properties and methods to work with an object that stores a filter of access protocol.
	IAuditFilterObjects	The IAuditFilterObjects interface contains properties and methods used to work with a collection of objects that store filters of access protocol.
	IAuditFiltersContainer	The AuditFiltersContainer interface contains properties and methods used to work with filter container of access protocol.
	IAuditLog	The IAuditLog interface contains properties and methods of the access protocol (event log) of the security manager.
	IAuditLogArchiveCallback	The IAuditLogArchiveCallback interface contains a method that implements an event that occurs while saving records of access protocol.
	IAuditLogons	The IAuditLogons interface contains properties and methods of a list of logons in repository.
	IAuditOperations	The IAuditOperations interface contains properties and methods of records of security protocol.
	ICertCredentials	The ICertCredentials interface contains credentials properties used on connection with digital signature.
	ICertificate	The ICertificate interface contains properties and methods to work with security certificate.
	ICertificates	The ICertificates interface contains properties and methods to work with collection of security certificates.
	ICertProvider	The ICertProvider interface contains properties and methods of certificate provider.
	ICertSigner	The ICertSigner interface contains properties and methods of digital signature signer.
	ICertVerifier	The ICertVerifier interface contains properties and methods of digital signature controller.
	IConnectedUserInfo	The IConnectedUserInfo interface contains properties of the user connected to the repository.
	IConnectedUserInfoEx	The IConnectedUsersInfoEx interface contains properties of active users connected to repository.
	IConnectedUsersInfo	The IConnectedUsersInfo interface contains properties of a collection of users connected to repository.
	IConnectedUsersInfoEx	The IConnectedUsersInfoEx interface contains properties of a collection of users connected to repository.
	IConnectionTransaction	The IConnectionTransaction interface contains methods of transactions.
	ICredentials	The ICredentials interface contains properties and methods used to work with credentials of the platform users.
	ICredentialsEx	The ICredentialsEx interface contains extended properties of the user credentials.
	ICredentialsRealm	The ICredentialsRealm interface contains properties used to work with the collection of accounts.
	ICredentialsSet	The ICredentialsSet interface contains properties and methods used to work with the collection of credentials.
	IDatabaseInitExecuteSetup	The IDatabaseInitExecuteSetup interface contains properties used to determine the parameters of databases, before connection to which the application macro is executed.
	IDbClass	The IDbClass interface contains properties of object class, available in the platform.
	IDbClasses	The IDbClasses interface contains properties and methods of the collection of object classes, available in the platform.
	IDbDriver	The IDbDriver interface contains properties of the DBMS driver, supported in the platform.
	IDbDrivers	The IDbDrivers interface contains properties and methods of the DBMS drivers, supported in the platform.
	IDomain	The IDomain interface contains properties that are used to work with the domain.
	IDomainCredentials	The IDomainCredentials interface contains properties and methods of credentials of active repository under domain authentication.
	IDomains	The IDomains interface contains properties and methods used to work with a collection of domains.
	IDomainStations	The IDomainStations interface contains properties and methods used to work with a collection of workstations that belong to domain.
	IFolder	The IFolder interface is a basic interface of the Folder repository object.
	IForm	The IForm interface contains properties of the Form development environment object.
	IHashedPasswords	The IHashedPasswords interface determines the parameters of the password hash.
	ILogonHours	The ILogonHours interface contains properties and methods used to restrict access time of the user during the day.
	ILogonHoursPeriod	The ILogonHoursPeriod interface contains properties of a period in which a restriction of access time of the user is performed.
	ILogonHoursPeriods	The ILogonHoursPeriods interface contains properties and methods that are used to work with the collection of periods in which the time of user access should be restricted.
	ILogonHoursPolicy	The ILogonHoursPolicy interface contains properties and methods used to manage the user access to the platform policy by time.
	ILogonParams	The ILogonParams interface contains properties used to determine link parameters.
	ILogonPeriod	The ILogonPeriod interface contains properties of the time interval on which there is a restriction of user access.
	ILogonSession	The ILogonSession interface contains properties and methods of a current session.
	IMbElementDependencies	The IMbElementDependencies interface contains properties and methods used to work with a collection of records about objects dependency from elements of MDM dictionary.
	IMbElementDependenciesDatabase	The IMbElementDependenciesDatabase interface contains properties and methods used to work with dependencies of repository objects from elements of MDM dictionary.
	IMbElementDependency	The IMbElementDependency interface contains properties used to work with a record about object dependency from elements of MDM dictionary.
	IMbElementDependencyTemplate	The IMbElementDependencyTemplate interface contains properties used to work with templates in accordance to which objects dependencies are selected.
	IMbElementDependent	The IMbElementDependent interface is used to work with a dependencies records of MDM dictionary elements from repository objects.
	IMbElementDependents	The IMbElementDependents interface is used to work with a collection of dependencies records of MDM dictionary elements from repository objects.
	IMbElementDependentsDatabase	The IMbElementDependentsDatabase interface is used for working with dependencies of elements of MDM dictionary from repository objects.
	IMbElementDependentTemplate	The IMbElementDependentTemplate interface is used to work with a dependencies template of MDM dictionary objects and elements from repository objects.
	IMetabase	The IMetabase interface contains properties and methods of a collection of repository objects.
	IMetabaseAuditPolicy	The IMetabaseAuditPolicy interface contains properties used to set up auditing by the determined classes of objects.
	IMetabaseAutoRun	The IMetabaseAutoRun interface contains properties of the user autorun object.
	IMetabaseCache	The IMetabaseCache interface contains properties and methods used to work with repository cache.
	IMetabaseCheckList	The IMetabaseCheckList interface contains properties and methods used to work with a list of object for which checksum is verified.
	IMetabaseCheckListItem	The IMetabaseCheckListItem interface contains properties of the element that is contained in the checksum list.
	IMetabaseClass	The IMetabaseClass interface contains statistic properties and methods of the MetabaseClass class.
	IMetabaseClassesSecurityDescriptors	The IMetabaseClassesSecurityDescriptors interface contains properties and methods to work with collection of of object types security descriptors.
	IMetabaseClassSecurityDescriptor	The IMetabaseClassSecurityDescriptor interface contains properties to work with object types security descriptors.
	IMetabaseCodeBlock	The IMetabaseCodeBlock interface contains properties and methods of an object that is a code block on FORE.
	IMetabaseCustomClass	The IMetabaseCustomClass interface contains properties used to work with the custom class.
	IMetabaseCustomClasses	The IMetabaseCustomClasses interface contains properties and methods used to work with a collection of custom classes.
	IMetabaseCustomClassOperation	The IMetabaseCustomClassOperation interface contains properties used to work with an operation of a custom class.
	IMetabaseCustomClassOperations	The IMetabaseCustomClassOperations interface contains properties and methods used to work with a collection of operations of a custom class.
	IMetabaseCustomEvents	The IMetabaseCustomEvents interface describes custom events that are processes on working in repository from web service.
	IMetabaseCustomExtender	The IMetabaseCustomExtender interface contains properties used to work with a container of repository custom classes.
	IMetabaseCustomForeEvent	The IMetabaseCustomForeEvent interface is used to work with a custom event.
	IMetabaseCustomForeEvents	The IMetabaseCustomForeEvents interface is used to work with collection of custom events.
	IMetabaseCustomObject	The IMetabaseCustomObject interface contains properties and methods used to work with an object of a custom class.
	IMetabaseCustomObjectReader	The IMetabaseCustomObjectReader interface contains properties and methods used to read data from an object of a custom class.
	IMetabaseCustomObjectReference	The IMetabaseCustomObjectReference interface contains properties used to work with an object dependency of a custom class.
	IMetabaseCustomObjectReferences	The IMetabaseCustomObjectReferences interface contains properties and methods used to work with the collection of dependencies of the custom class object.
	IMetabaseCustomObjectSelSets	The IMetabaseCustomObjectSelSets interface contains properties and methods used to work with collection of dimensions selections, which are linked to a custom class object.
	IMetabaseCustomObjectSerializer	The IMetabaseCustomObjectSerializer interface contains basic properties used to read and write data of an object of a custom class.
	IMetabaseCustomObjectWriter	The IMetabaseCustomObjectWriter interface contains properties and methods used to write data in an object of a custom class.
	IMetabaseDefinition	The IMetabaseDefinition interface contains properties and methods of repository description.
	IMetabaseDefinitions	The IMetabaseDefinitions interface contains properties and methods of the collection of the description of repositories that were registered on the workstation.
	IMetabaseDeviceDescriptor	The IMetabaseDeviceDescriptor interface is used to work with a device description.
	IMetabaseDeviceDescriptors	The IMetabaseDeviceDescriptors interface is used to work with the device description collection.
	IMetabaseDevicePolicy	The IMetabaseObjectSecurity interface is used to work with parameters of printers available for printing.
	IMetabaseGroup	The IMetabaseGroup interface contains properties and methods of the group of users.
	IMetabaseGroups	The IMetabaseGroups interface contains properties of collections of users groups.
	IMetabaseLink	The IMetabaseLink interface contains properties of the Repository Connection.
	IMetabaseLinkBase	The IMetabaseLinkBase interface contains basic properties used on connecting to repository.
	IMetabaseLinkInstance	The IMetabaseLinkInstance interface contains properties used to get access to the data of the repository, to which the connection is established by the Repository Connection.
	IMetabaseLogonEvents	The IMetabaseLogonEvents interface implements events on connecting to database.
	IMetabaseManager	The IMetabaseManager interface contains properties and methods of repositories manager.
	IMetabaseManagerFactory	The IMetabaseManagerFactory interface contains static properties of the MetabaseManagerFactory class.
	IMetabaseMandatoryAccess	The IMetabaseMandatoryAccess interface contains properties and methods of mandatory access.
	IMetabaseObject	The IMetabaseObject interface contains properties and methods of repository object.
	IMetabaseObjectCache	The IMetabaseObjectCache interface contains properties and methods used to work with repository object cache.
	IMetabaseObjectCacheItem	The IMetabaseObjectCacheItem interface contains properties and methods used to work with a record in object cache.
	IMetabaseObjectControl	The IMetabaseObjectControl interface contains properties and methods used to control parameters of the nested object.
	IMetabaseObjectControlInfo	The IMetabaseObjectControlInfo interface contains properties and methods used to work with collection of the nested object.
	IMetabaseObjectCopyInfo	The IMetabaseObjectCopyInfo interface contains properties that determine parameters of repository object copying or moving.
	IMetabaseObjectCreateInfo	The IMetabaseObjectCreateInfo interface contains properties used to set parameters of created object.
	IMetabaseObjectDescriptor	The IMetabaseObjectDescriptor interface contains properties and methods of the repository object description.
	IMetabaseObjectDescriptors	The IMetabaseObjectDescriptors interface contains properties and methods of a descriptions collection of metadata base objects.
	IMetabaseObjectFindInfo	The IMetabaseObjectFindInfo interface contains properties used to set conditions for search of the repository objects.
	IMetabaseObjectHistory	The IMetabaseObjectHistory interface contains properties of history of repository object change.
	IMetabaseObjectHistoryItem	The IMetabaseObjectHistoryItem interface contains properties of history records of object change.
	IMetabaseObjectInstance	The IMetabaseObjectInstance interface contains properties and methods used to work with an open instance of the repository object.
	IMetabaseObjectName	The IMetabaseObjectName interface is used to work with an object name.
	IMetabaseObjectNames	The IMetabaseObjectNames interface is used to work with objects names.
	IMetabaseObjectParam	The IMetabaseObjectParam interface contains properties of repository object parameters.
	IMetabaseObjectParamBinding	The IMetabaseObjectParamBinding interface contains properties and methods of settings elements of parameters display of repository object.
	IMetabaseObjectParamControl	The IMetabaseObjectParamControl interface contains properties used to set parameters binding of nested object with parameters of a current object.
	IMetabaseObjectParams	The IMetabaseObjectParams interface contains properties and methods of a collection of repository objects parameters.
	IMetabaseObjectParamsUpdate	The IMetabaseObjectParamsUpdate interface is used to work with repository object parameters after the IMetabaseObjectParams.BeginUpdate method is called.
	IMetabaseObjectParamValue	The IMetabaseObjectParamValue interface contains properties of values of repository object parameters.
	IMetabaseObjectParamValues	The IMetabaseObjectParamValues interface contains properties and methods of a collection of values of repository object parameters.
	IMetabaseObjectParamValuesEx	The IMetabaseObjectParamValuesEx interface is used to pass the additional state used on opening a regular report for view.
	IMetabaseObjectSecurity	The IMetabaseObjectSecurity interface is used to work with access policy to an object.
	IMetabaseOnBeforeLogonArgs	The IMetabaseOnBeforeLogonArgs interface describes the argument of the event occurred on repository connection using web service.
	IMetabasePasswordPolicy	The IMetabasePasswordPolicy interface contains properties and methods used to set password security policy.
	IMetabasePolicy	The IMetabasePolicy interface contains properties and methods used to set repository security policy.
	IMetabaseSecurity	The IMetabaseSecurity interface contains properties and methods used to set parameters of repository security manager.
	IMetabaseSecurityExporter	The IMetabaseSecurityExporter interface is used to export parameters of security policy and access permissions.
	IMetabaseSecuritySubjectUpdateSetup	The IMetabaseSecuritySubjectUpdateSetup interface is used to set up parameters of repository users update.
	IMetabaseUpdate	The IMetabaseUpdate interface contains properties and methods of the platform update manager.
	IMetabaseUpdateAbacRulesNode	The IMetabaseUpdateAbacRulesNode interface contains properties and methods of attribute-based access control in the update.
	IMetabaseUpdateCommentNode	The IMetabaseUpdateCommentNode interface contains properties determining parameters of updating comments update object.
	IMetabaseUpdateDataObjectNode	The IMetabaseUpdateDataObjectNode interface contains properties that determine update parameters of repository objects that contain data.
	IMetabaseUpdateDeleteObjectNode	The IMetabaseUpdateDeleteObjectNode interface contains properties that determine parameters of the update object which deletes repository objects.
	IMetabaseUpdateFolderNode	The IMetabaseUpdateFolderNode interface contains properties and methods of update structure.
	IMetabaseUpdateKeyMap	The IMetabaseUpdateKeyMap interface is used to work with a map of keys used for repeated mapping of update objects.
	IMetabaseUpdateMandatoryAccess	The IMetabaseUpdateMandatoryAccess interface contains parameters of the mandatory access to the update.
	IMetabaseUpdateNode	The IMetabaseUpdateNode interface contains properties of update object.
	IMetabaseUpdateObject	The IMetabaseUpdateObject interface is used to work with the Update repository object.
	IMetabaseUpdateObjectExParams	The IMetabaseUpdateObjectExParams interface is basic to set up extended update parameters of an object.
	IMetabaseUpdateObjectNode	The IMetabaseUpdateObjectNode interface contains properties of update object connected with repository object.
	IMetabaseUpdateObjectRemapping	The IMetabaseUpdateObjectRemapping interfaces is used for work with parameters of repeated mapping of repository object in update and in consumer repository.
	IMetabaseUpdateProgress	The IMetabaseUpdateProgress interface contains methods that implement the events that occur during update of the objects in the repository.
	IMetabaseUpdateProgressData	The IMetabaseUpdateProgressData interface contains properties used to get information about update process.
	IMetabaseUpdateProperties	The IMetabaseUpdateProperties interface contains properties and methods used to work with a collection of update flags.
	IMetabaseUpdateProperty	The IMetabaseUpdateProperty interface contains properties of update flag.
	IMetabaseUpdateRemapping	The IMetabaseUpdateRemapping interface is used to work with parameters of repeated element mapping in update and in consumer repository.
	IMetabaseUpdateRemappings	The IMetabaseUpdateRemappings interface is used to work with collection of repeated mappings of elements in update and in consumer repository.
	IMetabaseUpdateResolver	The IMetabaseUpdateResolver interface contains properties used to work with a collection of update dependencies from resource repository objects that are absent in customer repository.
	IMetabaseUpdateSecuritySubjectNode	The IMetabaseUpdateSecuritySubjectNode interface contains properties of the Security Subject.
	IMetabaseUpdateSpecialObjectsNode	The IMetabaseUpdateSpecialObjectsNode interface contains properties that determine the update parameters of special repository objects.
	IMetabaseUpdateSqlNode	The IMetabaseUpdateSqlNode interface contains properties of the SQL Operator update object.
	IMetabaseUpdateUnresolved	The IMetabaseUpdateUnresolved interface contains properties used to work with update dependency from resource repository object that is absent in customer repository.
	IMetabaseUpdateUserEvents	The IMetabaseUpdateUserEvents interface contains methods implementing the events that appear during object update in repository and used in the update module.
	IMetabaseUser	The IMetabaseUser interface contains properties and methods of repository user.
	IMetabaseUsers	The IMetabaseUsers interface contains properties used to work with a collection of repository users.
	IMetabaseUsersUpdate	The IMetabaseUsersUpdate interface contains properties and methods used to work with a collection of user about whom information is necessary to update.
	IMetabaseUsersUpdateCallback	The IMetabaseUsersUpdateCallback interface contains properties and methods for working with the operation, performed on occurrence of the critical error on updating users.
	IMetabaseUsersUpdateError	The IMetabaseUsersUpdateError interface contains properties of the error on updating the user
	IMetabaseUsersUpdateErrors	The IMetabaseUsersUpdateErrors interface contains properties and methods of collection of errors occurring on updating users
	IModule	The IModule interface contains basic properties of modules and forms of development environment.
	IMsSqlUserSPUD	The IMsSqlUserSPUD interface contains properties that are used to determine parameters of repository user created on the base of MSSQL DBMS.
	INamedEntity	The INamedEntity interface is basic for some interfaces and determines object properties.
	IObjectCheckOutInfo	The IObjectCheckOutInfo interface contains properties used to work with records collection about repository object lock.
	IObjectCheckOutInfoUser	The IObjectCheckOutInfoUser interface contains properties used to get information about repository object lock.
	IOperationCallback	The IOperationCallback interface is used to determine actions performed when a conflict appears during loading of filter container of access protocol.
	IOracleUserSPUD	The IOracleUserSPUD interface contains properties used to determine parameters of repository user created on the base of Oracle DBMS.
	IPasswordCredentials	The IPasswordCredintials interface contains properties and methods of active repository credentials under password authentication.
	IPasswordHistory	The IPasswordHistory interface contains methods used to work with a history of users passwords.
	IPostgresUserSPUD	The IPostgresUserSPUD interface contains properties used to determine parameters of the user of the repository, based on PostgreSQL DBMS.
	IPrimaryDB2SPLD	The IPrimaryDB2SPLD interface contains properties and methods of the security module that is used when connecting to the repository that is placed on the DB2 server.
	IPrimaryMsSqlODBCSPLD	The IPrimaryMsSqlODBCSPLD interface contains properties and methods of security module used on repository connection using Microsoft SQL Server ODBC driver.
	IPrimaryMsSqlSPLD	The IPrimaryMsSqlSPLD interface contains properties and methods of a security module used to connect with a scheme located on MS SQL server.
	IPrimaryODBCSPLD	The IPrimaryODBCSPLD interface contains properties and methods of the security module used on connecting to data sources using one of the ODBC drivers installed in the operating system.
	IPrimaryOracleSPLD	The IPrimaryOracleSPLD interface contains properties and methods of a security module used to connect with repository located on Oracle server.
	IPrimaryPostgresSPLD	The IPrimaryPostgresSPLD interface contains properties of the security module used on connecting to the repository, located on the PostgreSQL server.
	IPrimaryServiceSPLD	The IPrimaryServiceSPLD interface contains properties and methods of a security module that are used to connect to repository via the platform web service.
	IPrimarySQLiteSPLD	The IPrimarySQLiteSPLD interface contains properties and methods of a security module used to connect to repository located on SQLite server.
	IPrimaryTeradataSPLD	The IPrimaryTeradataSPLD interface contains properties and methods of a security module used to connect with repository located on Teradata server.
	IPrimaryVerticaSPLD	The IPrimaryVerticaSPLD interface contains properties and methods of a security module that is used to connect to the repository located on HP Vertica server.
	IPrivilege	The IPrivilege interface contains properties and methods of privilege of a security manager.
	IScPack	The IScPack interface contains properties of the platform security package.
	IScPacks	The IScPacks interface contains properties and methods of the platform security package collection.
	ISearchEngineServiceBase	The ISearchEngineServiceBase interface contains basic properties and methods to work with search service.
	ISearchEngineServiceFactory	The ISearchEngineServiceFactory interface contains method to initialize a new search service.
	ISecurityCategory	The ISecurityCategory interface contains properties and methods of security categories of mandatory access.
	ISecurityConnection	The ISecurityConnection interface contains properties and methods of connection with DB server.
	ISecurityConnection2	The ISecurityConnection2 interface is used to work with specific connection wit DB server.
	ISecurityConnection3	The ISecurityConnection3 interface describes the connection with the DB server, before connecting to which the application macro was executed.
	ISecurityDescriptor	The ISecurityDescriptor interface contains properties and methods of security description of object or object type.
	ISecurityDocumentLabel	The ISecurityDocumentLabel interface is used to work with security label used to mark objects during print and export while mandatory access is activated.
	ISecurityLabels	The ISecurityLabels interface contains properties of parameters of security label.
	ISecurityLevel	The ISecurityLevel interface is used to work with properties of security level.
	ISecurityPackage	The ISecurityPackage interface contains properties and methods of security module.
	ISecurityPackageLogonData	The ISecurityPackageLogonData interface contains basic properties of parameters of repository security module.
	ISecurityPackageLogonDataEx	The ISecurityPackageLogonDataEx interface contains additional properties of parameters of repository security module.
	ISecurityPackageUserData	The ISecurityPackageUserData interface contains properties that are used to determine security parameters of repository user.
	ISecuritySnapshot	The ISecuritySnapshot interface is used when the backup of the security policy is executed.
	ISecuritySnapshotCallback	The ISecuritySnapshotCallback interface contains methods that perform events that appear while settings recovery of security policy from backup copy.
	ISecuritySnapshotLog	The ISecuritySnapshotLog interface returns an application log of security policy contour.
	ISecuritySubject	The ISecuritySubject interface contains basic properties and methods used to work with security subject.
	ISecuritySubjects	The ISecuritySubjects interface contains properties of the collection of the platform security subjects.
	ISecuritySubjectsSearch	The ISecuritySubjectsSearch interface contains properties and methods used to search security subjects.
	ISid	The ISid interface contains properties of an identifier of security subject.
	ISidEx	The ISidEx interface contains extended properties of the security subject identifier.
	ISpecialObjects	The ISpecialObjects interface contains properties used to work with the collection of special repository objects method.
	ISQLiteUserSPUD	The ISQLiteUserSPUD interface contains properties used to determine parameters of the user of the repository based SQLite DBMS.
	IStation	The IStation interface contains properties and methods used to work with a workstation.
	IStations	The IStations interface contains properties and methods used to work with a collection of workstations.
	IStringFilterCondition	The IStringFilterCondition interface is used to work with the condition of access protocol filtering by particular object.
	ITeradataUserSPUD	The ITeradataUserSPUD interface contains properties used to determine parameters of the user of the repository based on Teradata DBMS.
	IUserEmail	The IUserEmail interface contains properties and methods used to work with the record about the email.
	IUserEmails	The IUserEmails interface contains properties and methods used to work with the collection of records about e-mail addresses.
	IUserProfile	The IUserProfile interface contains properties and methods used to determine the parameters of the user profile.
	IUserProfileProperties	The IUserProfileProperties interface contains properties and methods used to work with the collection of additional properties of the user.
	IUserPr ofileProperty	The IUserProfileProperty interface contains properties used to determine the parameters of additional property of the user.
	IUserProfiles	The IUserProfiles interface contains properties and methods for working with the collection of the user profiles.
	IVcsParams	The IVcsParams interface contains properties used to determine settings of repository connection to version control system.