Pass the Microsoft Certified: Azure Database Administrator Associate DP-300 Questions and answers with Dumpstech

SQL injection attacks are a type of cyberattack that exploit a vulnerability in the application code that interacts with the database. An attacker can inject malicious SQL statements into the user input, such as a form field or a URL parameter, and execute them on the database server, resulting in data theft, corruption, or unauthorized access1.

To protect all the databases on sql37006S95 from SQL injection attacks, you need to follow some best practices for securing your application and database layers. Here are some of the recommended steps:

Use parameterized queries or stored procedures to separate the SQL code from the user input. This will prevent the user input from being interpreted as part of the SQL statement and avoid SQL injection23.

Validate and sanitize the user input before passing it to the database. This will ensure that the input conforms to the expected format and type, and remove any potentially harmful characters or keywords4.

Implement least privilege access for the database users and roles. This will limit the permissions and actions that the application can perform on the database, and reduce the impact of a successful SQL injection attack5.

Enable Advanced Threat Protection for Azure SQL Database. This is a feature that detects and alerts you of anomalous activities and potential threats on your database, such as SQL injection, brute force attacks, or unusual access patterns. You can configure the alert settings and notifications using the Azure portal or PowerShell.

These are some of the steps to protect all the databases on sql37006S95 from SQL injection attacks.

Connect to db1 in SQL Server Management Studio and run:

ALTER DATABASE [db1]

SET QUERY_STORE (MAX_STORAGE_SIZE_MB = 4000);

Microsoft documents that Query Store maximum storage size is changed with:

ALTER DATABASE < database_name >

SET QUERY_STORE (MAX_STORAGE_SIZE_MB = < size > );

For Azure SQL Database, the maximum allowed MAX_STORAGE_SIZE_MB value is 10,240 MB, so 4,000 MB is valid.

Method 1 — SSMS / T-SQL Method

This is the cleanest method for the simulation.

Step 1: Open SQL Server Management Studio

Open SQL Server Management Studio.

Connect to the Azure SQL logical server that hosts db1.

Use SQL authentication or Microsoft Entra authentication.

In Connection Properties, select:

db1

You can also connect to master, but for this task it is cleaner to open a query window in db1.

Step 2: Run the Query Store configuration command

Open a new query window and run:

ALTER DATABASE [db1]

SET QUERY_STORE (MAX_STORAGE_SIZE_MB = 4000);

This changes the Query Store maximum allocated storage size to 4,000 MB.

Step 3: Verify the setting

Run this query in db1:

SELECT

actual_state_desc,

desired_state_desc,

current_storage_size_mb,

max_storage_size_mb

FROM sys.database_query_store_options;

Expected result:

max_storage_size_mb = 4000

Microsoft documents sys.database_query_store_options as the catalog view that returns Query Store configuration, including max_storage_size_mb.

Method 2 — SSMS Graphical Method

Use this if the simulation expects a GUI action.

Step 1: Connect to the server

Open SQL Server Management Studio.

Connect to the Azure SQL logical server.

Expand Databases.

Right-click db1.

Select Properties.

Step 2: Open Query Store settings

In the Database Properties window, select Query Store.

Find the setting:

Max Size (MB)

or:

Maximum Storage Size (MB)

Change the value to:

4000

Select OK.

Step 3: Verify

Run:

SELECT max_storage_size_mb

FROM sys.database_query_store_options;

Expected value:

4000

Azure Portal Clarification

The Azure portal is not the best tool for this specific Query Store configuration. Query Store size is a database engine setting, not a normal Azure resource setting like backup retention, locks, alerts, or private endpoints.

Use SSMS/T-SQL for this task.

Important Notes

Query Store must remain enabled

Do not disable Query Store. Azure SQL Database uses Query Store heavily, and Microsoft notes that Query Store is enabled by default for Azure SQL Database. The task only asks to increase the maximum storage size, not to change capture mode, cleanup policy, or operation mode.

4,000 MB is valid

Azure SQL Database allows Query Store MAX_STORAGE_SIZE_MB up to 10,240 MB, so this setting is within the allowed range.

Final Exam-Lab Action

Run this against db1:

ALTER DATABASE [db1]

SET QUERY_STORE (MAX_STORAGE_SIZE_MB = 4000);

Then verify with:

SELECT max_storage_size_mb

FROM sys.database_query_store_options;

The task is complete when the result shows:

4000

To enable change data capture (CDC) for db1, you need to run the stored procedure sys.sp_cdc_enable_db in the database context. CDC is a feature that records activity on a database when tables and rows have been modified1. CDC can be used for various scenarios, such as data synchronization, auditing, or ETL processes2.

Here are the steps to enable CDC for db1:

Connect to db1 using SQL Server Management Studio, Azure Data Studio, or any other tool that supports Transact-SQL statements.

Open a new query window and run the following command: EXEC sys.sp_cdc_enable_db; GO

This command will enable CDC for the database and create the cdc schema, cdc user, metadata tables, and other system objects for the database3.

To verify that CDC is enabled for db1, you can query the is_cdc_enabled column in the sys.databases catalog view. The value should be 1 for db1.

These are the steps to enable CDC for db1