DP-800 Premium File
- 101 Questions & Answers
- Last Update: Nov 12, 2026
A team needs controlled model endpoint definitions reusable across approved SQL workflows
Which SQL design or implementation decision most directly addresses this requirement?
A governed model object can centralize endpoint and identity parameters for supported SQL AI operations.
High-entropy IDs and timestamps add noise to natural-language embeddings; structured filters handle them better.
Embedding freshness requires detecting source changes and re-embedding only changed meaningful content.
A fixed-dimensional vector column cannot store embeddings of an incompatible dimension without schema or model changes.
A backup export contains customer personal records and is copied to offsite storage
Which SQL design or implementation decision most directly addresses this requirement?
Backup encryption protects copies outside the live database, but losing the key can make recovery impossible.
Always Encrypted keeps sensitive column values inaccessible to parties lacking client-side keys, unlike server-only encryption at rest.
Masking is a presentation control; filtering, permissions, and inference risks remain if users can query too freely.
Dynamic Data Masking changes query presentation for covered low-privilege principals but is not cryptographic encryption.
A workload shows deadlock graphs involving transactions acquiring inconsistent row locks
Which SQL design or implementation decision most directly addresses this requirement?
A deadlock is a cycle in lock dependencies, not merely long blocking; SQL chooses a victim transaction.
Latency symptoms may come from blocking, execution plans, throttling or network; one symptom cannot establish root cause.
Actual plans reveal runtime statistics and costly operators that estimated plans alone may not expose.
Blocking is caused by incompatible locks; addressing the head blocker is different from killing every waiting request.
A generated migration contains an unexpected destructive operation outside the requested scope
Which SQL design or implementation decision most directly addresses this requirement?
Natural-language prompts do not guarantee safe SQL, so explicit statement-level approval protects critical schema.
Least privilege reduces the impact of prompt injection, mistaken tool calls and credential disclosure.
Instruction files can guide generated suggestions toward local style and safety expectations, but must still be reviewed.
MCP endpoints are service interfaces requiring transport, authentication and authorization controls.
A database integration calls an external model but its endpoint details are duplicated in every stored procedure
Which SQL design or implementation decision most directly addresses this requirement?
A governed model object can centralize endpoint and identity parameters for supported SQL AI operations.
Different embedding models or versions need not share vector space; mixing vectors can destroy distance relevance.
Embedding quality varies by language and corpus; cross-lingual retrieval must be measured rather than assumed.
Functions can process detected row changes automatically but require connection, concurrency and retry safeguards.
A team stores source text without chunk IDs and cannot trace semantic hits back to the original document
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Provenance identifiers are needed for source citation, authorization and update/delete handling.
RRF combines positional rankings and avoids directly adding incompatible score scales.
Index freshness includes removal as well as addition and edits; stale documents can yield harmful answers.
Raw keyword and vector scores may have different ranges and meanings, so naive addition can bias results.
A support worker may inspect a masked phone number but not the full stored value
Which SQL design or implementation decision most directly addresses this requirement?
Dynamic Data Masking changes query presentation for covered low-privilege principals but is not cryptographic encryption.
Secure enclaves can permit certain richer operations over encrypted data within an attested protected boundary.
Object-level permissions enable task-specific capability without broad exposure to every table.
Managed identity supplies short-lived identity-based credentials without a long-lived application password.
A database query scans millions of rows despite filtering by a highly selective indexed key
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
The optimizer may scan without a suitable search path; index keys should reflect frequently filtered columns.
Actual plans reveal runtime statistics and costly operators that estimated plans alone may not expose.
Query Store retains plan and runtime history so regressions can be tied to specific plan choices.
DMVs expose current and cumulative SQL diagnostics that help distinguish contention from capacity or query-plan issues.
A backup export contains customer personal records and is copied to offsite storage
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Backup encryption protects copies outside the live database, but losing the key can make recovery impossible.
Managed identity supplies short-lived identity-based credentials without a long-lived application password.
Centralized identity management reduces shared-secret exposure and improves attribution and revocation.
RLS predicates must receive authenticated tenant context and connection pooling can retain session state unless managed.
A stored procedure should surface a failure to the calling pipeline without silently swallowing the message
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
THROW provides structured error propagation that callers can handle and prevents false-success status reporting.
Regex splitting can turn patterned text delimiters into row values for relational processing.
Errors can leave a transaction uncommittable; blindly committing from a catch block is unsafe.
Recursive CTEs need termination and data-integrity safeguards; a recursion cap is a protective limit, not a substitute for valid hierarchy rules.
A new customer row should start a multistep approval email and CRM update through managed connectors
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Logic Apps orchestrate heterogeneous connectors and retries more directly than embedding cross-service calls in a SQL trigger.
Search capability should use approved fields and query limits rather than exposing arbitrary free-form SQL.
Actionable alerts require measurable thresholds, destinations and noise controls rather than generic dashboards alone.
DAB entity mapping and permissions limit accessible objects and operations, complementing SQL grants.
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