WO2020199420A1

WO2020199420A1 - Method and system for non-destructive adjustment of otn protection services

Info

Publication number: WO2020199420A1
Application number: PCT/CN2019/096114
Authority: WO
Inventors: 陈�光; 姚世勇
Original assignee: 烽火通信科技股份有限公司
Priority date: 2019-03-29
Filing date: 2019-07-16
Publication date: 2020-10-08
Also published as: CN109788373A; CN109788373B; BR112021017082A2

Abstract

The present invention relates to the technical field of communications, and disclosed are a method and system for the non-destructive adjustment of OTN protection services. The present invention comprises the following steps: selecting an unprotected service to be adjusted, selecting the type, protection level and protection service properties of a protected service to be created, and creating a protection in the unprotected service. A protected service to be adjusted is selected, and the protection in the protected service is removed. By employing the technical solution of the present invention, a user is able to adjust an unprotected service to be a protected service and adjust a protected service to be an unprotected service without deactivating and removing the original service. Moreover, there is no influence on the actual connectivity of the original service, which thereby improves the usability for the user and improves the operating efficiency for a network administrator.

Description

Method and system for non-destructive adjustment of OTN protection service

Technical field

The present invention relates to the field of communication technology, in particular to a method and system for losslessly adjusting OTN protection services.

Background technique

In the OTN transmission network management, OTN services are strictly classified into OTS, OMS, OCH, OTUK, ODUK, CLIENT levels according to the standard. The ODUK layer can be divided into ODU1, ODU2, ODU3, ODU4 and other levels according to the actual rate. The business model More and more complicated. No matter how the business model changes, providing users with convenient, fast and stable operations is always the goal. The adjustment of OTN protection business is one of them. This includes the rapid adjustment of existing unprotected services to protected services without affecting the original actual connectivity of the unprotected services; at the same time, it includes adjusting the existing protected services to unprotected services without compromising protection. The actual connectivity of the work in the business has an impact.

The current way to adjust unprotected services to protected services is to delete unprotected services and then rebuild. When recreating the original service, a protected service is created for it at the same time, so that the original unprotected service is adjusted to a protected service. The inconvenience of this method is that the user needs to delete the created business first, and then repeat the creation, which undoubtedly increases the user's operation process, and when the unprotected business is already activated, the unprotected Deactivation of services will also lead to the interruption of unprotected services and affect the use of actual users.

Currently, if the protected service is adjusted to unprotected, the protected service needs to be deleted, and then the working service in the protected service is recreated to adjust to the unprotected service. This method also increases the user's repeated operations, and when the protection service is activated, the protection service must first be deactivated, which is also at the cost of interruption of the work service. With the passage of time and the advancement of technology, these defects have become more and more unacceptable for users. Under the circumstance of ensuring that the original business is not affected, users have put forward more and more suggestions on the ease of use and speed of operation. The higher the requirements.

Summary of the invention

The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology and provide a method and system for non-destructive adjustment of OTN protection services, to ensure that the original services are not affected, and to improve operation efficiency.

The present invention provides a method for non-destructive adjustment of OTN protection services, including the following steps:

Select the unprotected service to be adjusted, select the type, protection level, and attribute of the protected service to be created, and create protection for the selected unprotected service.

On the basis of the above solution, the method further includes the following steps: selecting the service with protection to be adjusted, and deleting protection for the selected service with protection.

On the basis of the above solution, the attributes of the protection service include protection mode, return method, delay time, and recovery waiting time.

On the basis of the above solution, the selection of unprotected services to be adjusted, selection of the type, protection level, and attributes of the protected services to be created, and creation of protection for the selected unprotected services specifically include the following steps:

Select the unprotected service to be adjusted, and determine the source and sink protected ports of the protected service to be created;

Select the type of protection service, select the protection level, and select the attribute of the protection service;

According to the business objects of each level on the working port of the work business, create business objects of each level on the protection port of the protection business;

According to the selected protection level, associate the protection business object and the work business object of the protection level to generate the protection relationship object, and record the association relationship between the work business, the protection business and the protection relationship object;

Associate the sibling relationship between the working sub-layer business and the protection sub-layer business under the protection layer granule;

Modify the network management status of the unprotected service to be adjusted, and remind the user that the adjusted service needs to be downloaded;

In the process of business downloading, the configuration data involved in each level of business and protection relationship objects are recorded in the database.

On the basis of the above solution, the selection of the service with protection to be adjusted and the deletion of protection for the selected service with protection specifically include the following steps:

Select the business with protection to be adjusted, obtain the working path and the protection path through the protection relationship object, clear the association relationship between the work path, the protection path and the protection relationship object, delete the protection relationship object, record the work business and the deleted protection relationship object Delete relationship

Recursively clear the sibling relationship between the sub-layer path of the work service and the sub-layer path of the protection service, and record the deletion relationship between the sub-layer path of the work service and the sub-layer path of the protection service;

Record the relationship between the protection service to be deleted and the parent layer path and the work service and parent layer path respectively;

Delete the protection path, the child path and the parent path of the protection path, and store the data of the deleted relationship between the services recorded above in the database;

Modify the network management status of the work business, and remind the user that the adjusted business needs to be downloaded;

In the process of business downloading, search for related deleted services of each layer and correlate the download, and clear the recorded deletion relationship data and configuration data in the database.

The present invention also provides a system for lossless adjustment of OTN protection services, including:

The first service adjustment module is used to select the unprotected service to be adjusted, select the type, protection level, and attribute of the protected service to be created, and create protection for the selected unprotected service.

On the basis of the above solution, the system further includes a second service adjustment module, which is used to select the service with protection to be adjusted and delete protection for the selected service with protection.

On the basis of the above solution, the first service adjustment module selects the unprotected service to be adjusted, selects the type, protection level, and attributes of the protected service to be created, and creates protection for the selected unprotected service, including: The following steps:

Associate the sibling relationship between the sub-level business of the working business under the protection level granule and the sub-level business of the protection business;

On the basis of the above solution, the second service adjustment module selects the service with protection to be adjusted, and deletes protection for the selected service with protection, which specifically includes the following steps:

Delete the protection path, the child path and the parent path of the protection path, and store the deleted relationship data between the services recorded above in the database;

In the process of business downloading, find the associated deleted services of each layer and associate the download, and clear the recorded deletion relationship data and configuration data in the database.

Compared with the prior art, the advantages of the present invention are as follows:

By adopting the technical scheme of the present invention, the user does not need to deactivate and delete the original service, and can realize the adjustment of the unprotected service to the protected service and the protected service to the unprotected service. And it does not have any impact on the actual connectivity of the original business, improves the user's ease of use, and improves the operating efficiency of the network management.

Description of the drawings

FIG. 1 is a schematic diagram of a process of adjusting an unprotected service to a protected service in a method for losslessly adjusting an OTN protection service according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a process of adjusting a protected service to an unprotected service in a method for losslessly adjusting an OTN protection service according to an embodiment of the present invention.

detailed description

Reference will now be made in detail to specific embodiments of the present invention, which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, please understand that it is not intended to limit the present invention to the described embodiments. On the contrary, it is intended to cover changes, modifications, and equivalents included within the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described here can be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of both.

In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Note: The example to be introduced next is only a specific example, and is not intended to limit the embodiment of the present invention. The specific steps, values, conditions, data, sequence, etc. must be as follows. Those skilled in the art can use the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.

The embodiment of the present invention provides a method for lossless adjustment of OTN protection services, which includes the following steps:

Preferably, the method further includes the following steps: selecting the service with protection to be adjusted, and deleting the protection for the selected service with protection. If the current path is a protection path, you only need to switch the roles of the protection path and the working path, set the original protection path as the current working path, and the original working path as the current protection path, then the embodiment of the present invention can be applied to delete protection for services with protection Methods.

Preferably, the attributes of the protection service include protection mode, return method, delay time, and recovery waiting time.

Preferably, as shown in Figure 1, the steps for adjusting the unprotected service to the protected service are as follows:

S11. On the interface of the network management, directly select the unprotected service to be adjusted, and provide a menu item to directly add a protected path in the shortcut menu after right-clicking for the user to choose.

S12. Select the type of protection service, such as OCH1+1, OCH1:1, ODUK1+1, ODUK1:1 and CLIENT1+1; select the protection level, and determine the available protection level according to the current level of the working path to which the protection path is selected. Select the level of the protection service. The protection level can be the level of the current service or the level of its parent. For example, there are three levels of services on the original unprotected service port, namely the ODUK service of ODU1, ODU2, and ODU3. When choosing to create protection on the service of ODU2, the protection level can be ODU2, ODU3, and when choosing to create protection on the service of ODU1, then the level can be ODU1, ODU2 or ODU3. When you choose to add protection to the service of ODU1, and the protection level is selected as ODU1, the protection level is the same as the cross particle. When the selected protection level is ODU2 or ODU3, then it is the large particle protection small particle cross scenario; To select the protection mode, return method, delay time, recovery waiting time and other attributes. To determine the source and sink ports of the protection path, the rate of the port must be consistent with the rate of the working port, and the service level of the mapped path on the protection port must be the same as the path above the protection level on the working port, that is, the service level on the working port is There are three layers of ODU1, ODU2, and ODU3. When adding protection to ODU2, the service layer on the protected port needs to be ODU2 and ODU3.

S13. According to the service level to be created on the protection service port, the ODUK services of each layer are created in sequence from large particles to cross particles. After creating an ODUK service with the same protection level as the selected protection level, it is necessary to recursively analyze whether there are sub-level services in the work service corresponding to the protection level and its sub-levels. Then, create and work under the same protection ODUK object as the protection level. The next-to-one sub-layer service of the business ODUK object. For example, the service level on the port of the original unprotected service is ODU4=1/OUD3=1/ODU2=1, ODU4=1/ODU3=2, ODU4=1/OUD3=1/ODU2=2, that is, on this port There is one ODU4 service, two ODU3 sub-layer services in the ODU4 service, and two ODU2 services in the ODU3=1 service. When choosing to add protection for OUD4 services, after creating ODU4 services on the protected port, two corresponding ODU3 services and two ODU2 services need to be created at the same time. When you choose to add protection for the service of ODU3=2, and the protection level selects ODU3, then ODU4 and ODU3 services can be created on the protected port. When you choose to add protection for the service with ODU3=1, and choose ODU3 as the protection level, after creating ODU4 and ODU3 services on the protection port, you need to create two ODU2 services in a one-to-one correspondence with the sub-layer service with ODU3=1.

S14. Create a protection relationship object, and associate the created work business and protection business object at the same level as the protection level. At the same time, the information of the protection relationship object is recorded in the attributes of the work business and the protection business object to indicate that the work business is a business with protection.

S15. When the protection is a large particle and the cross is a small particle, the sub-layer service corresponding to the work service will be created under the protection service, so that when the protection is switched, all the small-particle services are switched, so you need to work The sibling relationship of the protection service sub-layer is recorded in the attribute of the sub-layer service, and the sibling relationship of the working sub-layer is recorded in the sub-layer attribute of the protection service.

S16. When the network management status of the original unprotected service is activated, its status needs to be adjusted to a partially activated status, prompting the user that the service has been adjusted and needs to be downloaded again to make the adjusted protection effective. When the network management status of the original unprotected service is partially activated or inactive, there is no need to change its status, because in the inactive or partially activated state, the user himself needs to activate the service to enable the service All functions take effect.

S17. When the user activates the business, it is necessary to store the relevant configuration data related to the business and protection relationship objects at each level in the database table in Table 1, that is, to record the corresponding relationship between the business ID and the configuration data, so that when the business is After deletion, the associated configuration can be taken out and then cleared in the device.

Table 1. Correspondence table of business ID and configuration data

字段Field	类型Types of	备注Remarks
cbusinessidcbusinessid	intint	业务IDBusiness ID
cdatacdata	longbloblongblob	配置数据Configuration Data

Preferably, as shown in Figure 2, the implementation steps for adjusting a protected service to an unprotected service are described as follows:

S21. On the network management interface, directly select the protected service to be adjusted. When the status of the protected service network management is activated or inactive, the menu item to directly delete the protection path is provided in the shortcut menu after right-clicking for the user to choose .

S22. Obtain the working path and the protection path therein through the protection relationship object, clear the connection between the work path, the protection path and the protection relationship object, delete the protection relationship object, and record the deletion of a working business ID and the deleted protection relationship object ID Relationship, so that the ID of the corresponding deleted object can be found through the data when the work service is downloaded.

S23. Recursively obtain any sub-layer business under the work business, clear the sibling relationship of the sub-layer business records, and record the deletion relationship between each sub-layer business and the protection sub-layer business one by one. For example, the level of the work service is ODU2, and there are 3 sub-level services under it as ODU1, then the sibling relationship associated with the three sub-level ODU1 services needs to be cleared, and the deletion relationship between the delete sub-level service ID and the work service sub-level service ID is generated. If the work business has no sub-level business, it means that the protection level is the same as the cross grain, and there is no need to remove the sibling relationship.

S24. If the upper layer of the work business contains a service layer, it means that the protection layer is not the largest particle, and the upper layer of the protection business also has a service layer. When the service layer of the protection business has no other sub-layers other than the current protection business, the protection business also needs to be deleted When the top-level ODUK business needs to be deleted, the OTUK business also needs to be deleted. If the protection level is ODU2, the upper layer of the working service ODU2 has two services, ODU3 and ODU4, and the upper layer of the protection service ODU2 also has two services, ODU3 and ODU4, and it needs to be deleted when there is no other service under the protection service layer ODU3. The sub-layer of the ODU4 service layer needs to be deleted when there are no other sub-layer services except the current ODU3. When ODU4 needs to be deleted, its service layer ODUT also needs to be deleted. Record the relationship between the deleted protection business and the parent layer and the work business and the parent layer respectively.

S25. Delete the protection child path, protection path, and protection parent path to release the resources occupied in each path. For example, when the network management status of the protection service is activated before the protection is deleted, the recorded deleted protection service ID and The corresponding relationship information of the associated work service ID is stored in the database table shown in Table 2.

Table 2. Correspondence between the deleted work service ID and the associated protection service ID

字段Field	类型Types of	备注Remarks
cdeledbizIdcdeledbizId	intint	被删除保护业务IDDeleted protection business ID
crelatebizIdcrelgoldenstatebizId	intint	关联的工作业务IDAssociated work business ID

S26. When the original network management status with the protection service is activated, the status of the adjusted unprotected working path needs to be modified to partially activated, and the user is prompted to download the service.

S27. When the user activates or deactivates the adjusted service, find the deleted service ID associated with it in the database table 2 through the unprotected service ID to be activated or deactivated, and the ID of the deleted service The configuration data is retrieved from the recorded service configuration database table 1 and deleted along with the unprotected service. At the same time delete the information recorded in the database Table 1 and Table 2.

The embodiment of the present invention also provides a system for lossless adjustment of OTN protection services, including:

Preferably, the system further includes a second service adjustment module, which is used to select the service with protection to be adjusted and delete protection for the selected service with protection.

Preferably, the first service adjustment module selects the unprotected service to be adjusted, selects the type, protection level, and attribute of the protected service to be created, and creates protection for the selected unprotected service, which specifically includes the following steps:

Preferably, the second service adjustment module selects the service with protection to be adjusted, and deletes protection for the selected service with protection, which specifically includes the following steps:

In the process of business downloading, find the associated deleted services of each layer and associate the download, and then clear the recorded deletion relationship data and configuration data in the database.

Based on the same inventive concept, the present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, all or some of the method steps in the method for non-destructive adjustment of OTN protection services are realized.

All or part of the processes in the method for implementing the lossless adjustment of OTN protection services in the embodiments of the present invention can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When executed by the processor, the steps of the foregoing method embodiments can be implemented. The computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. Computer-readable media may include: any entity or device capable of carrying computer program code, recording media, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access Memory (RAM, Random Access Memory), electric carrier signal, telecommunications signal, software distribution medium, etc. It should be noted that the content contained in computer-readable media can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to the legislation and patent practice, computer-readable media does not include Electric carrier signal and telecommunications signal.

Based on the same inventive concept, this application also provides an electronic device, including a memory and a processor, the memory stores a computer program running on the processor, and the processor executes the computer program in a method for achieving lossless adjustment of OTN protection services All or part of the method steps.

The so-called processor can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), ready-made Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may also be any conventional processor, etc. The processor is the control center of the computer device, and various interfaces and lines are used to connect various parts of the entire computer device.

The memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, where the storage program area can store the operating system, at least one application program (such as sound playback function, image playback function, etc.) required by the function; the storage data area can be stored according to the mobile phone Use the created data (such as audio data, video data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disks, memory, plug-in hard disks, smart media cards (SMC), and secure digital (SD) cards. , Flash Card, at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

A method for non-destructive adjustment of OTN protection services is characterized in that it comprises the following steps:

Select the unprotected service to be adjusted, select the type, protection level, and attribute of the protected service to be created, and create protection for the selected unprotected service.
The method according to claim 1, wherein the method further comprises the following steps: selecting the service with protection to be adjusted, and deleting protection for the selected service with protection.
The method according to claim 1, wherein the attributes of the protection service include protection mode, return mode, delay time, and recovery waiting time.
The method according to claim 1, characterized in that: selecting the unprotected service to be adjusted, selecting the type, protection level, and attributes of the protected service to be created, and creating protection for the selected unprotected service. It includes the following steps:

Select the unprotected service to be adjusted, and determine the source and sink protected ports of the protected service to be created;

Select the type of protection service, select the protection level, and select the attribute of the protection service;

According to the business objects of each level on the working port of the work business, create business objects of each level on the protection port of the protection business;

According to the selected protection level, associate the protection business object and the work business object of the protection level to generate the protection relationship object, and record the association relationship between the work business, the protection business and the protection relationship object;

Associate the sibling relationship between the working sub-layer business and the protection sub-layer business under the protection layer granule;

Modify the network management status of the unprotected service to be adjusted, and remind the user that the adjusted service needs to be downloaded;

In the process of business downloading, the configuration data involved in each level of business and protection relationship objects are recorded in the database.
The method according to claim 2, characterized in that: selecting the service with protection to be adjusted and deleting protection for the selected service with protection includes the following steps:

Select the business with protection to be adjusted, obtain the working path and the protection path through the protection relationship object, clear the association relationship between the work path, the protection path and the protection relationship object, delete the protection relationship object, record the work business and the deleted protection relationship object Delete relationship

Recursively clear the sibling relationship between the sub-layer path of the work service and the sub-layer path of the protection service, and record the deletion relationship between the sub-layer path of the work service and the sub-layer path of the protection service;

Record the relationship between the protection service to be deleted and the parent layer path and the working service and parent layer path respectively;

Delete the protection path, the child path and the parent path of the protection path, and store the data of the deleted relationship between the services recorded above in the database;

Modify the network management status of the work business, and remind the user that the adjusted business needs to be downloaded;

In the process of business downloading, find the associated deleted services of each layer and associate the download, and clear the recorded deletion relationship data and configuration data in the database.
A system for non-destructive adjustment of OTN protection services, characterized in that it includes:

The first service adjustment module is used to select the unprotected service to be adjusted, select the type, protection level, and attribute of the protected service to be created, and create protection for the selected unprotected service.
7. The system according to claim 6, characterized in that: the system further comprises a second service adjustment module, which is used to select the protected service to be adjusted and delete protection for the selected protected service.
The system according to claim 6, wherein the attributes of the protection service include protection mode, return mode, delay time, and recovery waiting time.
The system according to claim 6, wherein the first service adjustment module selects the unprotected service to be adjusted, selects the type, protection level, and attribute of the protected service to be created, and is the selected unprotected service Business creation protection includes the following steps:

Select the unprotected service to be adjusted, and determine the source and sink protected ports of the protected service to be created;

Select the type of protection service, select the protection level, and select the attribute of the protection service;

According to the business objects of each level on the working port of the work business, create business objects of each level on the protection port of the protection business;

According to the selected protection level, associate the protection business object and the work business object of the protection level to generate the protection relationship object, and record the association relationship between the work business, the protection business and the protection relationship object;

Associate the sibling relationship between the sub-level business of the working business under the protection level granule and the sub-level business of the protection business;

Modify the network management status of the unprotected service to be adjusted, and remind the user that the adjusted service needs to be downloaded;

In the process of business downloading, the configuration data involved in each level of business and protection relationship objects are recorded in the database.
The system according to claim 7, wherein the second service adjustment module selects the service with protection to be adjusted, and deletes protection for the selected service with protection, which specifically includes the following steps:

Select the business with protection to be adjusted, obtain the working path and the protection path through the protection relationship object, clear the association relationship between the work path, the protection path and the protection relationship object, delete the protection relationship object, and record the work business and the deleted protection relationship object Delete relationship

Recursively clear the sibling relationship between the sub-layer path of the work service and the sub-layer path of the protection service, and record the deletion relationship between the sub-layer path of the work service and the sub-layer path of the protection service;

Record the relationship between the protection service to be deleted and the parent layer path and the work service and parent layer path respectively;

Delete the protection path, the child path and the parent path of the protection path, and store the deleted relationship data between the services recorded above in the database;

Modify the network management status of the work business, and remind the user that the adjusted business needs to be downloaded;

In the process of business downloading, find the associated deleted services of each layer and associate the download, and clear the recorded deletion relationship data and configuration data in the database.