From which table do applications in the CMDB extend?

In ServiceNow, the Configuration Management Database (CMDB) is structured hierarchically, and the base table from which other tables extend is crucial for understanding the relationships between different configuration items (CIs). The cmdb_ci table serves as the base class for all configuration items, including various types of applications, services, hardware, and other IT resources.

Applications in the CMDB that are categorized under specific modules extend from the cmdb_ci table. This means that they inherit common attributes and behaviors from cmdb_ci, allowing for consistent data management, reporting, and processing across different types of configuration items. By extending from the cmdb_ci base table, applications can leverage standard features of the CMDB like relationships, categorization, and lifecycle management, all of which are defining characteristics of configuration items within ServiceNow.

This foundational relationship is essential because it ensures that all CIs, regardless of type, remain within a unified data structure, enabling coherence and interoperability within the ITSM processes.