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.
This SNOW-CSA practice question tests your understanding of database administration and cmdb. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
Dependency relationship (structural)
Structural dependency is the correct type for service-dependency modeling.
Membership relationship
Why wrong: Membership is used for grouping CIs, not for dependencies.
Ownership relationship
Why wrong: Ownership is for tracking who owns a CI.
Connectivity relationship
Why wrong: Connectivity is for physical or logical network connections.
Answer choices
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
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.
Related concept
Read the scenario before looking for a memorised answer.
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.
Common exam traps
The trap here is that candidates confuse 'dependency' with 'connectivity' 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.
Detailed technical explanation
Under the hood, ServiceNow CMDB uses the 'Depends on' relationship type (sys_relationship_type table) with a directionality flag, enabling the platform to traverse the graph for impact analysis and service mapping. In a real-world scenario, if the server fails, the dependency chain allows the CMDB to automatically calculate that both the application and the business service are affected, triggering CI-based alerts and change risk scoring. This model aligns with ITIL's service dependency mapping and is stored in the cmdb_rel_ci table with a parent-child structure.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Database Administration and CMDB — This question tests Database Administration and CMDB — Read the scenario before looking for a memorised answer..
The correct answer is: 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Same concept, more angles
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Variation 1. Which TWO of the following are valid CI relationship types in ServiceNow?
easyWhy C: Option C is correct because '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.
Last reviewed: Jun 11, 2026
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