You need to recommend an isolation level for usp_UpdateOrderDetails. Which isolation level should
recommend?
Case Study:
Litware, Inc Case B
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 2005 database named App1_DB. App1_Db
will remain in production.
Requirements:
Planned ChangesYou plan to deploy a SQL Server 2012 instance that will contain two databases named Databasel and
Database2.
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. Each query against the
Orders table must return the same data. All statements in the stored procedure run in a single transaction.
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
several small data sets of up to 100 rows each. Each data set will be used multiple times.
Data from Database2 will be accessed periodically by an external application named Application!. 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 2012 backups.
Business Requirements:
You have the following requirements:
Costs for new equipment must be minimized.
External access to the databases must be encrypted.
Development effort must be minimized whenever possible.
System administrators must be notified when disk space falls below a certain threshold.
The databases must be available if the SQL Server service or the storage solution 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.

A.
repeatable read

B.
read uncommitted

C.
read committed

D.
serializable