70-463 Question #64: Real Exam Question with Answer & Explanation

The correct answer is C: a Merge component. Note: Type of Slowly Changing Dimensions Slowly Changing Dimensions are categorized into three types named: Type 1, Type 2, and Type3. The Type 1 SCD does not maintain the history of changing attributes, it overwrites values of the Type 2 maintains historical values for changing

Question

You are creating a SQL Server Integration Services (SSIS) package that implements a Type 3 Slowly Changing Dimension (SCD). You need to add a task or component to the package that allows you to implement the SCD logic. What should you use?

Options

Aa Data Conversion component
Ban Execute SQL task that executes a MERGE statement on the database
Ca Merge component
Dan Expression task

Explanation

Note: Type of Slowly Changing Dimensions Slowly Changing Dimensions are categorized into three types named: Type 1, Type 2, and Type3. The Type 1 SCD does not maintain the history of changing attributes, it overwrites values of the Type 2 maintains historical values for changing attributes. Type 3 that we do not use much maintains separate columns for changed attributes. SSIS SCD wizard supports both Type 1 and Type 2. Using MERGE instead of SCD wizard Replacement of SCD wizard with MERGE is not a straightforward technique. If the SCD has both Type 1 and Type 2 types attributes, they need to be handled separately.

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