Microsoft DP-600 Online Access

For the semantic model design required for the customer satisfaction report, the choices for data source authentication method and mode should be made based on security and performance considerations as per the case study provided.

Authentication method: The data should be accessed securely, and given that row-level security (RLS) is required for users executing T-SQL queries, you should use an authentication method that supports RLS. Service principal authentication is suitable for automated and secure access to the data, especially when the access needs to be controlled programmatically and is not tied to a specific user ' s credentials.

Mode: The report needs to show data as soon as it is updated in the data store, and it should only contain data from the current and previous year. DirectQuery mode allows for real-time reporting without importing data into the model, thus meeting the need for up-to-date data. It also allows for RLS to be implemented and enforced at the data source level, providing the necessary security measures.

Based on these considerations, the selections should be:

Authentication method: Service principal authentication

Mode: DirectQuery

The Python code and output shown in the exhibit display a histogram, which is a representation of the distribution of data. This kind of analysis is descriptive analytics, which is used to describe or summarize the features of a dataset. Descriptive analytics answers the question of " what has happened " by providing insight into past data through tools such as mean, median, mode, standard deviation, and graphical representations like histograms.

There is no USEROBJECT() function in DAX. The correct functions available are USERNAME() and USERPRINCIPALNAME().

USERPRINCIPALNAME() is the one that returns the UPN directly.

Since the solution refers to a non-existent function (USEROBJECT()), it cannot solve the problem.

Correct approach: Update the measure to use USERPRINCIPALNAME(), not USEROBJECT().

The goal is to denormalize the data into a customer dimension with one row per distinct CustomerID, minimizing query processing time and resources. Since each customer is associated with a single SalesRegion and a single CustomerAddress, and all foreign key values are non-null, a left outer join is appropriate to ensure all customers from the Customer table are included, even if there are any unexpected missing addresses (though the problem states each customer has a single address). However, given the non-null foreign key constraint, an inner join could also work, but left outer join is safer and aligns with denormalization to ensure completeness.

The join condition should link the Customer table (C) with the CustomerAddress table (CA) using CustomerID, as this ensures each customer ' s address data is included.

The join with SalesRegion (SR) on SalesRegionID is already included in the query, and since each customer has a single SalesRegion, it fits the denormalization requirement.

The where CA.AddressType = ' Main Office ' filter ensures only the main office address is included, which is a valid constraint for a customer dimension.

Thus, the completed T-SQL statement would effectively denormalize the data while minimizing resource use by leveraging the existing relationships and constraints.