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Q:

What is an abstract class?

Answer

An abstract class is an incomplete class. An abstract class is defined with the keyword abstract . We cannot create an object of the abstract class because it is not complete. It sets a behavioral protocol for all its child classes.

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Subject: Java

Q:

An Oracle System Change Number (SCN):

A) is a value that is incremented whenever a dirty read occurs. B) is incremented whenever a deadlock occurs.
C) is a value that keeps track of explicit locks. D) is a value that is incremented whenever database changes are made.
 
Answer & Explanation Answer: D) is a value that is incremented whenever database changes are made.

Explanation:
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Filed Under: Database

Q:

Of the three ways to create an Oracle database, which one is the easiest and most recommended?

A) Using the Oracle Database Configuration Assistant. B) Using the Oracle-supplied database creation procedures.
C) Using the SQL CREATE DATABASE command. D) None of the above is correct.
 
Answer & Explanation Answer: A) Using the Oracle Database Configuration Assistant.

Explanation:
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Filed Under: Database

Q:

You are setting up a computer for students to use to practice exercises for their certification exams. You want to configure the computer so that users can boot into both Windows 98 and Windows 2000 Professional. You want to ensure that students can access all drive resources from either operating system. What should you do?

A) Create a single FAT32 partition. B) Create a single NTFS volume.
C) Configure one NTFS volume, and one extended FAT32 partition. D) Configure a dynamic volume.
 
Answer & Explanation Answer: A) Create a single FAT32 partition.

Explanation:
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Filed Under: MCSE-Microsoft Certified Solutions Expert

Q:

You are the administrator of a SQL Server 2000 computer. Your company uses the server to store service contract information for its customers. You are also the administrator of an Oracle relational database management system (RDBMS) server. This server is used to store your company's financial information. The financial information is updated frequently throughout the day.You need to create a series of reports that combine the service contract information and the financial information. These reports will be updated several times a day.You want to create these reports on the SQL Server computer by using the minimum amount of disk space. What should you do?

A) Set up SQL Server replication to replicate the data from the Oracle server to the SQL Server computer. B) Set up the Oracle server as a linked server. Create a view that joins the service contract information and the financial information.
C) Set up a Microsoft ActiveX script that connects to the Oracle server and imports the financial information into a SQL Server temporary table. Create a view that joins the service contract information and the temporary table. D) Set up a Data Transformation Services (DTS) package that imports and transforms the data from the Oracle server to the SQL Server computer. Use SQL Server Agent to execute the DTS package throughout the day as needed.
 
Answer & Explanation Answer: B) Set up the Oracle server as a linked server. Create a view that joins the service contract information and the financial information.

Explanation:

SQL Server 2000 permits the creation of links to OLE DB data sources called linked servers. After linking to an OLE DB data source, it is possible to reference rowsets from the OLE DB data sources as tables in Transact-SQL statements and to pass commands to the OLE DB data sources and include the resulting rowsets as tables in Transact-SQL statements. Each distributed query can reference multiple linked servers and can perform either update or read operations against each individual linked server. A single distributed query can perform read operations against some linked servers and update operations against other linked servers. The Microsoft OLE DB Provider for Oracle allows distributed queries to query data in Oracle databases.

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Filed Under: MCSE-Microsoft Certified Solutions Expert

Q:

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an
application. The application connects to a Microsoft SQL Server database. The application stores encrypted credit card numbers in the database. You need to ensure that credit card numbers can be extracted from the database.
Which cryptography provider should you use?

A) DSACryptoServiceProvider B) AESCryptoServiceProvider
C) MD5CryptoServiceProvider D) SHA1CryptoServiceProvider
 
Answer & Explanation Answer: B) AESCryptoServiceProvider

Explanation:
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Filed Under: MCSD-Microsoft Certified Solutions Developer

Q:

You use Visual Studio .NET to develop a Windows-based application that interacts with a Microsoft SQL Server database. Your application contains a form named CustomerForm.

 You add the following design-time components to the form:

• SqlConnection object named XYZConnection.
• SqlDataAdapter object named XYZDataAdapter.
• DataSet object named XYZDataSet.
• Five TextBox controls to hold the values exposed by XYZDataSet.


At design time, you set the DataBindings properties of each TextBox control to the appropriate column in the DataTable object of XYZDataSet. When you test the application, you can successfully connect to the database. However, no data is displayed in any text boxes.

You need to modify your application code to ensure that data is displayed appropriately. Which behavior should occur while the CustomerForm.Load event handler is running?

A) Execute the BeginInit method of XYZDataSet. B) Execute the Open method of XYZConnection.
C) Execute the FillSchema method of XYZDataAdapter and pass in XYZDataSet. D) Execute the Fill method of XYZDataAdapter and pass in XYZDataSet.
 
Answer & Explanation Answer: D) Execute the Fill method of XYZDataAdapter and pass in XYZDataSet.

Explanation:

Dataset is a container; therefore, you need to fill it with data. You can populate a dataset by calling the Fill method of a data adapter.

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Filed Under: Microsoft Certification

Q:

When can we have a Line Item Dimension?

A. When we have less number of Characteristics in a Dimension

B. When we have a Single Characteristic in a Dimension

C. When we have multiple Line Items

Answer

Answer : B

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Subject: SAP BW