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Case Study 1
Litware, Inc
Overview
You are a database administrator for a company named Litware, Inc. Litware is a book
publishing house.
Litware has a main office and a branch office.
You are designing the database infrastructure to support a new web-based application that is
being developed. The web application will be accessed at www.litwareinc.com. Both internal
employees and external partners will use the application.
You have an existing desktop application that uses a SQL Server 2008 database named
App1_DB. App1_DB will remain in production.
Requirements
Planned Changes
You plan to deploy a SQL Server 2014 instance that will contain two databases named
Database1 and Database2. All database files will be stored in a highly available SAN.
Database1 will contain two tables named Orders and OrderDetails. Databasel will also
contain a stored procedure named usp_UpdateOrderDetails. The stored procedure is used to
update order information. The stored procedure queries the Orders table twice each time the
procedure executes. The rows returned from the first query must be returned on the second
query unchanged along with any rows added to the table between the two read operations.
Database1 will contain several queries that access data in the Database2 tables.
Database2 will contain a table named Inventory. Inventory will contain over 100 GB of data.
The Inventory table will have two indexes: a clustered index on the primary key and a
nonclustered index. The column that is used as the primary key will use the identity property.
Database2 will contain a stored procedure named usp_UpdateInventory.
Usp_UpdateInventory will manipulate a table that contains a self-join that has an unlimited
number of hierarchies.
All data in Database2 is recreated each day and does not change until the next data creation
process.
Data from Database2 will be accessed periodically by an external application named
Application1. The data from Database2 will be sent to a database named App1_Db1 as soon
as changes occur to the data in Database2.
Litware plans to use offsite storage for all SQL Server 2014 backups.
Business Requirements
You have the following requirements:
• Costs for new licenses must be minimized.
• Private information that is accessed by Application must be stored in a secure format.
• Development effort must be minimized whenever possible.
• The storage requirements for databases must be minimized.
• System administrators must be able to run real-time reports on disk usage.
• The databases must be available if the SQL Server service fails.
• Database administrators must receive a detailed report that contains allocation errors
and data corruption.
• Application developers must be denied direct access to the database tables.
Applications must be denied direct access to the tables.
• You must encrypt the backup files to meet regulatory compliance requirements. The
encryption strategy must minimize changes to the databases and to the applications.
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You need to recommend a database reporting solution that meets the business
requirements.
What should you include in the recommendation?
A.
Data collection
B.
Performance Monitor
C.
A maintenance plan
D.
A dynamic management view
Explanation:
* Scenario: System administrators must be able to run real-time reports on disk usage.
* The data collector provides an historical report for each of the System Data collection sets.
Each of the following reports use data that is stored in the management data warehouse:
Disk Usage Summary
Query Statistics History
Server Activity History
You can use these reports to obtain information for monitoring system capacity and
troubleshooting system performance.
Why not D?
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Why not C? 😉
Assuming that question is about this requirement (question 60 is about disk usage)
Database administrators must receive a detailed report that contains allocation errors
and data corruption.
Making a maintenance plan with checkdb would be the best option.
https://msdn.microsoft.com/en-us/library/ms180226.aspx
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+1
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As long as you set up a MDW database, the Data Collector feature provides enough information for building maintenance plans and troubleshooting DB operations.
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A
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the important is “able to run real-time reports on disk usage”
-> real-time
How can you get a report from dmvs or maintenance plans in real-time without restarting the query every second…
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The “able to run real-time reports on disk usage” makes me lean toward D:. Data collection for MDW is not real time.
Creating a report by whatever means which uses data from sys.master_files and sys.dm_os_volume_stats will give you immediate real-time data.
SELECT
sys.master_files.*
, os_volume_stats.*
from sys.master_files
CROSS APPLY sys.dm_os_volume_stats(sys.master_files.database_id, sys.master_files.file_id) os_volume_stats
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A) Data collection
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