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NEW QUESTION # 73
You have an Azure SQL database that supports an AI-enabled product catalog API. The database contains a table named Sales.Orders. Sales.Orders contains 20 million rows and has a nonclustered index on a column named CreateDate.
The API passes a date parameter named @OrderDate.
You have a stored procedure named get_latest_day_orders that filters by running the following query.
WHERE CAST(CreateDate AS date) = @0rderDate.
A review of the query execution reveals that the query causes an index scan.
You need to modify the predicate to ensure that Microsoft SQL Server can use an index seek on CreateDate for a single day.
Which WHERE clause should you use?
Answer: D
Explanation:
To achieve an Index Seek on your CreateDate column, you must remove the CAST function from the column side of the equation. Wrapping a column in a function makes the expression non- SARGable (Searchable Argument), forcing SQL Server to scan the entire index rather than jumping to a specific range.
The Recommended WHERE Clause
To capture all rows for a single day while remaining SARGable, use a range comparison:
WHERE CreateDate >= @OrderDate
AND CreateDate < DATEADD(day, 1, @OrderDate)
Why This Works
Eliminates Functions on Columns: By keeping CreateDate "naked," the query optimizer can use the nonclustered index to find the exact starting point.
Handles Time Components: Since CreatedDate likely contains time data (DATETIME or DATETIME2), this logic captures everything from 00:00:00.000 up to (but not including) midnight of the following day.
Single Day Precision: It creates a "half-open" interval that is the standard best practice for date filtering in SQL Server.
Reference:
https://medium.com/@c.charalambos1998/how-to-design-indexes-in-sql-server-for-faster-query- performance-4a2279a9b512
NEW QUESTION # 74
Which scenario best fits AI-enhanced SQL querying?
Answer: C
Explanation:
AI allows conversational querying of SQL databases.
NEW QUESTION # 75
You need to enable similarity search to provide the analysts with the ability to retrieve the most relevant health summary reports. The solution must minimize latency.
What should you include in the solution?
Answer: C
Explanation:
The correct answer is D because the requirement is to enable similarity search over embedding vectors and to minimize latency . Microsoft documents that CREATE VECTOR INDEX is specifically used to create an index on vector data for approximate nearest neighbor (ANN) search , which is designed to accelerate vector similarity queries compared to exact k-nearest-neighbor scans.
This matches the scenario exactly. The VehicleHealthSummary table already includes an Embeddings (vector (1536)) column. In Microsoft SQL platforms, embeddings are stored in vector columns and queried for semantic similarity. To improve performance and reduce response time, Microsoft recommends a vector index , not a regular B-tree nonclustered index and not a full-text index. A vector index is purpose-built for finding the most similar vectors efficiently.
The other options are not appropriate:
* A would require manual comparison logic and would increase latency rather than minimize it.
* B is incorrect because a standard nonclustered index is not the index type used for vector similarity operations.
* C is incorrect because full-text indexes are for textual token-based search, not numeric vector embeddings.
Microsoft's current documentation is explicit that vector indexes support approximate nearest neighbor search , and that the optimizer can use the ANN index automatically for vector queries. That is the exam- aligned design choice when the goal is fast retrieval of the most relevant health summary reports from an embeddings column.
NEW QUESTION # 76
Drag and Drop Question
You have an Azure SQL database named sqldb-ai-prod that stores customer support tickets for a multitenant software as a service (SaaS) application. sqldb-ai-prod contains a table named Tickets. Tickets contains columns named TenantId, TicketId, CustomerEmail, CustomerPhone, and Notes.
You plan to harden data access, since a new support team will use ad hoc reporting tools that connect directly to sqldb-ai-prod.
You need to configure security to meet the following requirements:
- Support agents must see only the rows of their own TenantId column.
- Support agents must see only the domain name portion of the
CustomerEmail column.
What should you do for each requirement? To answer, drag the appropriate actions to the correct requirements. Each action may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 77
You have an Azure SQL database that contains a column named Notes.
A security review discovers that Notes contains sensitive data.
You need to ensure that the data is protected so that neither the stored values nor the query inputs reveal information about the actual data. The solution must prevent a user from inferring relationships or repetitions in the data based on the encrypted output.
Which should you use?
Answer: C
Explanation:
To protect sensitive Azure SQL database columns so that neither stored values nor query inputs reveal actual data--and to prevent inference of relationships/repetitions--Always Encrypted with Randomized Encryption is recommended. This approach ensures that data is encrypted on the client side, and the database engine never handles plaintext data or keys.
Key Recommendations:
Always Encrypted (Randomized): Use randomized encryption, which produces different encrypted values (ciphertext) for the same plaintext, preventing pattern analysis.
Azure Key Vault: Store column encryption keys in Azure Key Vault for secure, manageable key storage.
Client-side Encryption: Data is encrypted/decrypted within the application's memory using the SQL client driver, ensuring the database engine or high-privileged users cannot access the data.
Incorrect:
[Not D]
Deterministic Encryption: Allows matching queries (e.g., WHERE Column = 'Value'), but allows attackers to infer patterns and repetitions in data.
Transparent Data Encryption (TDE): Protects data at rest, but SQL users can still see plaintext data, violating the requirement.
Reference:
https://oneuptime.com/blog/post/2026-02-16-how-to-configure-always-encrypted-in-azure-sql- database/view
NEW QUESTION # 78
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