Topic 4, WingTip Toys
General Background
You are a data architect for WingTip Toys. The company uses SQL Server 2012 Enterprise edition. SQL Server Analysis Services (SSAS) and SQL Server Reporting Services (SSRS) are installed on separate servers.
Data Warehouse
The company’s data warehouse initially contained less than 100 MB and 100 million rows of data from only one data source. It now contains more than 10 TB and 10 billion rows of data, in 25 tables, from 12 data sources.
The largest table in the data warehouse, the fact Orders table, contains 5 TB of data. The factOrders table contains three date keys: OrderDateKey InvoiceDateKey, and ShipDateKey. The data warehouse server has 1 TB of RAM. Memory usage is currently at 20 percent.
One billion rows of data are added to the data warehouse each month. New data is copied each night from the data sources into SQL Server staging tables, and existing records are not updated. The largest data set is order information, which is loaded in parallel into multiple staging tables, one for each data source. All the staging tables have the same structure and belong to the same filegroup as the factOrders table.
The dimCustomers table stores customer information that may change over time.
Data Models
You are developing three SSAS databases, as described in the following table.
Reporting
Business users frequently generate reports in Microsoft Excel by using PowerPivot. The PowerPivot Management Dashboard does not currently display any usage data.
Several SSRS reports exist that use the data warehouse as a source. The data warehouse queries are aggregate queries that use the fact Orders table and one or more dimension tables. All SSRS data sources use Integrated Windows authentication.
SSRS displays a security access error message when managers run SSRS reports based on the Operations database.
Reporting performance has become unacceptably slow.
Business Requirements
Improve the query speed of the SSRS reports.
Allow business users to create reports by using PowerPivot and Power View.
Ensure that all users other than business users can view metadata for the Customers dimension. Ensure that business users cannot view metadata for the Customers dimension.
Technical Requirements
Modify the tables in the data warehouse to minimize aggregate query processing time.
Minimize disk storage in the data warehouse.
Ensure that all multidimensional models process data as quickly as possible.
Create a fact table named fact Customer Contact in the data warehouse to store the contact date, customer key, and communication type for each instance of customer contact.
Store the history of customer information changes in the dim Customers table.
Move data from the staging tables into the fact Orders table as quickly as possible. When creating dimensions for the date keys in the fact Orders table, minimize storage space requirements and optimize the cube processing time.
Ensure that queries against the Sales database return the most current data in the data warehouse.
Ensure that the SSAS model of the Finance database does not page to disk or return a memory error as the size of the database grows.
Create an SSAS monitoring solution that tracks the following data:
– Queries answered per second
– Queries from cache direct per second
– Queries from file per second.
You need to ensure that managers can successfully run reports.
What should you do?
A . Implement Kerberos delegation.
B . Configure the SSRS data sources to store Windows credentials.
C . Implement forms-based authentication.
D . Configure the Custom Data property in the connection strings.
Answer: A