CMDB Relationship Types: Dependency, Connectivity, Membership, and Ownership
A consultant is designing the CMDB for a large enterprise. The company wants to track relationships between business services, applications, and infrastructure components. Which relationship model should be used to represent that a business service depends on an application, which in turn depends on a server?
Quick Answer
The answer is the dependency relationship (structural). This is the correct choice because it explicitly captures the directional “depends on” nature of the chain, where a business service relies on an application, which in turn relies on a server. In ServiceNow CMDB, structural dependency relationships like “Depends on” and “Used by” are designed to represent these hierarchical, transitive dependencies between CIs, enabling accurate impact analysis and root cause mapping. On the ServiceNow Certified System Administrator CSA exam, this concept tests your understanding of how CMDB relationship types—dependency, connectivity, membership, and ownership—map to real-world IT service chains. A common trap is confusing membership (which groups CIs into a logical set) with dependency, or assuming connectivity (which describes network links) applies here. Memory tip: think of a falling domino chain—dependency is the “if this breaks, that breaks” link, making it the only model that captures transitive reliance.
⚠ Common exam trap
The trap is that candidates confuse 'dependency' with 'connectivity' in ServiceNow, because both involve links between CIs, but connectivity only describes physical or logical network links without the directional 'depends on' semantics required for service impact chains in ServiceNow.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Dependency relationship (structural)
A dependency relationship (structural) is the correct model because it explicitly captures the directional 'depends on' nature of the chain: a business service relies on an application, which in turn relies on a server. In ServiceNow CMDB, structural dependency relationships (e.g., 'Depends on' or 'Used by') are designed to represent these hierarchical, transitive dependencies between CIs, enabling impact analysis and root cause mapping.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Dependency relationship (structural)
Why this is correct
Structural dependency is the correct type for service-dependency modeling.
- ✗
Membership relationship
Why it's wrong here
Membership is used for grouping CIs, not for dependencies.
- ✗
Ownership relationship
Why it's wrong here
Ownership is for tracking who owns a CI.
- ✗
Connectivity relationship
Why it's wrong here
Connectivity is for physical or logical network connections.
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Same concept, more angles
1 more way this is tested on SNOW-CSA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO of the following are valid CI relationship types in ServiceNow?
easy- A.Uses
- B.Connects to
- ✓ C.Member of
- D.Owns
- ✓ E.Depends on
Why C: 'Member of' is a predefined CI relationship type in ServiceNow's CMDB, used to indicate that a CI belongs to a group or cluster, such as a server being a member of a cluster. This relationship is part of the standard CMDB relationship model and is commonly used for grouping CIs like applications, clusters, or business services.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SNOW-CSA practice question is part of Courseiva's free ServiceNow certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SNOW-CSA exam.