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NEW QUESTION: 1
Which two database file types can be compressed with the least impact on overall performance? (Select two.)
A. Read-only tablespaces
B. Database control files
C. Temporary tablespaces
D. Archive logs
E. SYSTEM tablespace
Answer: D,E

NEW QUESTION: 2
You are asked to develop a program for a shopping application, and you are given the following information:
Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?

A. Option B
B. Option C
C. Option A
D. Option D
Answer: C

NEW QUESTION: 3
Background
Corporate Information
Fabrikam, Inc. is a retailer that sells electronics products on the Internet. The company has a
headquarters site and one satellite sales office. You have been hired as the database administrator, and
the company wants you to change the architecture of the Fabrikam ecommerce site to optimize
performance and reduce downtime while keeping capital expenditures to a minimum. To help with the
solution, Fabrikam has decided to use cloud resources as well as on-premise servers.
Physical Locations
All of the corporate executives, product managers, and support staff are stationed at the headquarters
office. Half of the sales force works at this location. There is also a satellite sales office. The other half of
the sales force works at the satellite office in order to have sales people closer to clients in that area. Only
sales people work at the satellite location.
Problem Statement
To be successful, Fabrikam needs a website that is fast and has a high degree of system uptime. The
current system operates on a single server and the company is not happy with the single point of failure
this presents. The current nightly backups have been failing due to insufficient space on the available
drives and manual drive cleanup often needing to happen to get past the errors. Additional space will not
be made available for backups on the HQ or satellite servers. During your investigation, you discover that
the sales force reports are causing significant contention.
Configuration
Windows Logins
The network administrators have set up Windows groups to make it easier to manage security. Users may
belong to more than one group depending on their role. The groups have been set up as shown in the
following table:

Server Configuration The IT department has configured two physical servers with Microsoft Windows
Server 2012 R2 and SQL Server 2014 Enterprise Edition and one Windows Azure Server. There are two
tiers of storage available for use by database files only a fast tier and a slower tier. Currently the data and
log files are stored on the fast tier of storage only. If a possible use case exists, management would like to
utilize the slower tier storage for data files. The servers are configured as shown in the following table:

Database
Currently all information is stored in a single database called ProdDB, created with the following script:

The Product table is in the Production schema owned by the ProductionStaff Windows group. It is the
main table in the system so access to information in the Product table should be as fast as possible. The
columns in the Product table are defined as shown in the following table:

The SalesOrderDetail table holds the details about each sale. It is in the Sales schema owned by the
SalesStaff Windows group. This table is constantly being updated, inserted into, and read. The columns in
the SalesOrderDetail table are defined as shown in the following table:

Database Issues
The current database does not perform well. Additionally, a recent disk problem caused the system to go
down, resulting in lost sales revenue. In reviewing the current system, you found that there are no
automated maintenance procedures. The database is severely fragmented, and everyone has read and
write access.
Requirements
Database
The database should be configured to maximize uptime and to ensure that very little data is lost in the
event of a server failure. To help with performance, the database needs to be modified so that it can
support in-memory data, specifically for the Product table, which the CIO has indicated should be a
memoryoptimized table. The auto-update statistics option is set off on this database. Only product
managers are allowed to add products or to make changes to the name, description, price, cost, and
supplier. The changes are made in an internal database and pushed to the Product table in ProdDB
during system maintenance time. Product managers and others working at the headquarters location also
should be able to generate reports that include supplier and cost information.
Customer data access
Customers access the company's website to order products, so they must be able to read product
information such asname, description, and price from the Product table. When customers place orders,
stored procedures calledby the website update product quantityon-hand values. This means the product
table is constantly updated at randomtimes.
Customer support data access
Customer support representatives need to be able to view and not update or change product information.
Management does not want the customer support representatives to be able to see the product cost or any
supplier information.
Sales force data access
Sales people at both the headquarters office and the satellite office must generate reports that read from
the Product and SalesOrderDetail tables. No updates or inserts are ever made by sales people. These
reports are run at random times and there can be no reporting downtime to refresh the data set except
during the monthly maintenance window. The reports that run from the satellite office are process intensive
queries with large data sets. Regardless of which office runs a sales force report, the SalesOrderDetail
table should only return valid, committed order data; any orders not yet committed should be ignored.
Historical Data
The system should keep historical information about customers who access the site so that sales people
can see how frequently customers log in and how long they stay on the site.
The information should be stored in a table called Customer Access. Supporting this requirement should
have minimal impact on production website performance.
Backups
The recovery strategy for Fabrikam needs to include the ability to do point in time restores and minimize
the risk of data loss by performing transaction log backups every 15 minutes.
Database Maintenance
The company has defined a maintenance window every month when the server can be unavailable. Any
maintenance functions that require exclusive access should be accomplished during that window.
Project milestones completed
Revoked all existing read and write access to the database, leaving the schema ownership in place.
Configured an Azure storage container secured with the storage account name MyStorageAccount with
the primary access key StorageAccountKey on the cloud file server.
SQL Server 2014 has been configured on the satellite server and is ready for use.
On each database server, the fast storage has been assigned to drive letter F:, and the slow storage has
been assigned to drive letter D:.
You need to implement changes to the system to reduce contention and improve performance of the
SalesOrderDetail table.
Which three actions should you perform? Each correct answer presents part of the solution. (Choose
three.)
A. ALTER DATABASE [ProdDB] SET READ_COMMITTED_SNAPSHOT ON
B. ALTER DATABASE [ProdDB] SET ALLOW.SNAPSHOT ISOLATION ON H.
Use (SNAPSHOT] hints in the update statements
C. Use (TABLOCK) hints in the report queries
D. SET TRANSACTION ISOLATION LEVEL SNAPSHOT
E. SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
F. Use (SNAPSHOT] hints in the report queries
G. ALTER DATABASE [ProdDB] SET READ_COMMITTED_SNAPSHOT OFF
Answer: A,E,F
Explanation:
Explanation/Reference:
Explanation:
- Scenario: The SalesOrderDetail table holds the details about each sale. It is in the Sales schema owned
by the SalesStaff Windows group. This table is constantly being updated, inserted into, and read.
- Regardless of which office runs a sales force report, the SalesOrderDetail table should only return valid,
committed order data; any orders not yet committed should be ignored.
- READ_COMMITTED_SNAPSHOT { ON | OFF } ON Enables Read-Committed Snapshot option at the
database level. When it is enabled, DML statements start generating row versions even when no
transaction uses Snapshot Isolation. Once this option is enabled, the transactions specifying the read
committed isolation level use row versioning instead of locking.
When a transaction runs at the read committed isolation level, all statements see a snapshot of data as it
exists at the start of the statement. OFF Turns off Read-Committed Snapshot option at the database level.
Transactions specifying the READ COMMITTED isolation level use locking. ALTER DATABASE SET
Options (Transact-SQL) SET Statements (Transact-SQL)

NEW QUESTION: 4
Drag and drop the characteristics from the left to the correct Infrastructure deployment type on the right.

Answer:
Explanation:

Explanation