Microsoft Updated DP-203 Exam Questions and Answers by emerson

To run a T-SQL query over a set of files within a folder or set of folders while treating them as a single entity or

rowset, provide a path to a folder or a pattern (using wildcards) over a set of files or folders.

Box 1: {YYYY}/{MM}/{DD}/{HH}

Date Format [optional]: if the date token is used in the prefix path, you can select the date format in which your files are organized. Example: YYYY/MM/DD

Time Format [optional]: if the time token is used in the prefix path, specify the time format in which your files are organized. Currently the only supported value is HH.

Box 2: {regionID}/raw

Data engineers from each region must be able to build their own pipelines for the data of their respective region only.

Box 3: {deviceID}

A Type 3 SCD supports storing two versions of a dimension member as separate columns. The table includes a column for the current value of a member plus either the original or previous value of the member. So Type 3 uses additional columns to track one key instance of history, rather than storing additional rows to track each change like in a Type 2 SCD.

This type of tracking may be used for one or two columns in a dimension table. It is not common to use it for many members of the same table. It is often used in combination with Type 1 or Type 2 members.

 Storage1 provides a hierarchical namespace: Yes

 Files from March 2025 will be included: No

 Only files that have a Parquet file extension will be included: Yes

Query Breakdown

Data Source:

The OPENROWSET function queries data stored in Azure Data Lake Storage Gen2 (storage1) using the serverless SQL pool in Synapse Analytics.

The data is stored in Parquet files in the folder structure data/orders/year=YYYY/month=MM/.

Query Filter:

The filter conditions in the query are:

customerorders.filepath(1) = '2024': Limits the query to files in the folder year=2024.

customerorders.filepath(2) IN ('3', '4'): Limits the query to files in the subfolders month=3 or month=4.

File Format:

The FORMAT = 'parquet' clause specifies that only Parquet files will be queried.

Statements Analysis

Storage1 provides a hierarchical namespace.Answer: Yes

Azure Data Lake Storage Gen2 supports a hierarchical namespace, which enables folder-based organization.

The folder structure (e.g., data/orders/year=2024/month=3/) demonstrates the use of a hierarchical namespace.

Files from March 2025 will be included.Answer: No

The query explicitly filters for year=2024, so files from 2025 will not be included in the results.

Only files that have a Parquet file extension will be included.Answer: Yes

The FORMAT = 'parquet' clause in the query ensures that only Parquet files are queried. Files with other extensions (e.g., .csv or .json) will not be included.