Question 1

The data _____ component of a database management system (DBMS)is used for tasks such as backup and recovery,security,and change management.
A)manipulation
B)generation
C)definition
D)administration

Accepted Answer

The administration component of a DBMS is responsible for tasks such as backup and recovery, security, and change management. The other components - manipulation, generation, and definition - focus on data retrieval, report creation, and defining the structure of the database, respectively.

Question 2

In data warehouses,_____ is information about data-its content,quality,condition,origin,and other characteristics.
A)metadata
B)big data
C)summary data
D)raw data

Accepted Answer

Metadata is information about data, including its content, quality, condition, origin, and other characteristics. This information is crucial for managing and utilizing the data in a data warehouse effectively. Raw data refers to the unprocessed data that is collected from various sources, while summary data is data that has been aggregated or summarized in some way. Big data typically refers to large and complex data sets that are difficult to process using traditional data management tools.

Question 3

In data warehouses,_____ gives users subtotals of various categories,which can be useful.
A)summary data
B)raw data
C)open data
D)metadata

Accepted Answer

Summary data is the data that gives users subtotals of various categories. It is useful for analyzing trends and making decisions. Raw data refers to data that has not been processed or analyzed. Open data refers to data that can be freely accessed, used, and shared by anyone. Metadata is data that describes other data, such as the structure, content, and context of data.

Question 4

In data warehouses,_____ is information in its original form.
A)summary data
B)raw data
C)paradata
D)metadata

Accepted Answer

Raw data is information in its original form and is the basis for all analysis and reporting in a data warehouse. Summary data is aggregated and processed data that is derived from raw data. Paradata refers to data about the process of collecting or analyzing data, and metadata is data about data that describes the structure and context of the data in the warehouse.

Question 5

The _____ operator,discussed in data manipulation,is used when all the conditions in a query by example (QBE)form are required to be met.
A)NOT
B)AND
C)OR
D)MIS

Accepted Answer

The AND operator requires that all conditions in a query be met, which aligns with the description given in the question. NOT, OR, and MIS are not relevant to this scenario.

Question 6

In the context of data administration component,the acronym CRUD stands for _____.
A)create,read,update,and delete
B)copy,revise,undo,and define
C)create,repeat,undo,and develop
D)copy,read,update,and define

Accepted Answer

CRUD stands for Create, Read, Update, and Delete, which are the basic operations that can be performed on a database. These operations allow users to manipulate data in a database through a user interface or application. Option B, C, and D are not correct as they do not correctly represent the meaning of CRUD.

Question 7

Data warehouses are sometimes called "hypercubes" because they _____.
A)are function oriented
B)store multidimensional data
C)capture raw transaction data
D)manage transactions

Accepted Answer

Data warehouses are designed to store and analyze multidimensional data, often involving many dimensions or attributes. The term "hypercube" is used to describe this type of data structure, which consists of multiple dimensions (like a cube) that can be analyzed and explored in various ways. While data warehouses may capture raw transaction data, their primary function is to provide a consolidated view of data for reporting and analysis purposes. They are not typically used to manage transactions in real-time.

Question 8

The _____ component of a database management system (DBMS)is responsible for data storage,manipulation,and retrieval.
A)database storage
B)database output
C)database extraction
D)database engine

Accepted Answer

The database engine is responsible for data storage, manipulation, and retrieval in a DBMS. It is the core component that interacts with the database, processes queries, and manages transactions. Options A, B, and C are not valid components of a DBMS.

Question 9

The component that is used to design elements of an application using a database,such as data entry screens,interactive menus,and interfaces,with other programming languages is the _____ component.
A)application generation
B)application definition
C)application administration
D)application manipulation

Accepted Answer

The component that is used to design elements of an application using a database is called application generation. It involves creating screens, menus, and interfaces through which users interact with the system. Other programming languages, such as SQL or JDBC, may be used to manipulate data, but they are not used for designing the elements themselves.

Question 10

The _____ component of a database management system (DBMS)is used to add,delete,modify,and retrieve records from a database.
A)data manipulation
B)data generation
C)data definition
D)data administration

Accepted Answer

The data manipulation component of a DBMS is specifically designed to add, delete, modify, and retrieve records from a database. It is responsible for performing operations such as selecting specific records, updating existing records, and deleting records that are no longer needed. The other options presented are not correct because data generation refers to the process of creating new data (which is not a core function of a DBMS), data definition refers to the creation of the database schema (which is a different component of the DBMS), and data administration refers to the ongoing management of the database (including tasks such as performance tuning and backup and recovery).

Question 11

The _____ approach,used to set up a distributed database management system (DDBMS),combines fragmentation and replication.
A)optimization
B)allocation
C)encapsulation
D)normalization

Accepted Answer

The allocation approach is used to set up a distributed database management system (DDBMS). It combines fragmentation and replication to allocate the data at various sites of the network according to their specific needs. This approach involves dividing the database into fragments and distributing these fragments across different sites based on their accessibility and usage patterns. Replication is used to duplicate data at various sites for faster access and improved reliability. This approach ensures that data remain available in case of network failure, data loss, or data access latency. The optimization approach is used to optimize the performance of DDBMS by selecting the best strategies for data storage and retrieval. Encapsulation approach is used for controlling and managing the access to data across the network. Normalization approach is used to eliminate redundant information in a database.

Question 12

In a data warehouse,_____ means collecting data from a variety of sources and converting it into a format that can be used in transformation processing.
A)extraction
B)transformation
C)optimization
D)aggregation

Accepted Answer

Extraction is the process of collecting data from a variety of sources and converting it into a format that can be used in transformation processing.

Question 13

A database administrator is responsible for _____.
A)developing recovery procedures in case data is lost or corrupted
B)maintaining (keeping)an organization's computer network up to date
C)writing computer programs that allow the system to perform a specific task
D)designing and implementing the information systems

Accepted Answer

A database administrator is responsible for developing recovery procedures in case data is lost or corrupted. They are also responsible for managing the security, backup, and recovery of databases, as well as ensuring the integrity and performance of the database system. Database administrators are not typically responsible for maintaining computer networks, writing computer programs, or designing and implementing information systems.

Question 14

The _____ component of a database management system (DBMS)is used to create and maintain the data dictionary.
A)data manipulation
B)data generation
C)data definition
D)data administration

Accepted Answer

The data definition component of a DBMS is responsible for creating and maintaining the data dictionary or schema. This includes defining the structure and relationships of the data in a database.

Question 15

A data _____ is a collection of data from a variety of sources used to support decision-making applications and generate business intelligence.
A)dictionary
B)pattern
C)mine
D)warehouse

Accepted Answer

A data warehouse is specifically designed to store data from various sources in a structured manner, making it easily accessible for analytical purposes. It is often used for business intelligence and to support decision-making applications. A data dictionary is a database of information about data elements and their attributes, while a data pattern is a repeated set of characteristics or trends in data. Data mining is the process of extracting useful information from a large dataset through statistical analysis.

Question 16

A(n)_____ is not limited by the data's physical location.
A)distributed database
B)relational database
C)object-oriented database
D)semi-structured database

Accepted Answer

A distributed database is designed to store and manage data across multiple locations or nodes on a network. This allows for greater scalability and availability compared to a traditional centralized database, which may be limited by the physical location of the data.

Question 17

A _____ is usually a smaller version of a data warehouse,used by a single department or function.
A)data domain
B)data mine
C)data dictionary
D)data mart

Accepted Answer

A data mart is usually a smaller version of a data warehouse that is focused on a specific department or function within an organization. It contains a subset of data from the larger data warehouse that is tailored to the specific needs of that department or function. Therefore, option D, data mart, is the best choice.

Question 18

In well-designed data-driven Web sites,changes are made to the _____ code every time a Web site's data content changes.
A)Hyper Text Markup Language (HTML)
B)Java
C)Python
D)C#

Accepted Answer

In well-designed data-driven websites, changes are made to the HTML code to reflect any changes made to the website's data content. HTML is a markup language used to structure content on the web, and it is easily modifiable to reflect changes in data. Java, Python, and C# are all programming languages used for server-side programming, but they are not directly involved in modifying the HTML code of the website.

Question 19

In contrast to data in a database,discussed in data warehouses,the subject-oriented characteristic _____.
A)captures raw transaction data
B)manages data transactions
C)focuses on a specific area
D)keeps recent activity in memory

Accepted Answer

The subject-oriented characteristic of data warehouses means that they focus on a specific area or subject, such as sales or customer data, rather than capturing raw transactional data (A), managing data transactions (B), or keeping recent activity in memory (D).

Question 20

Which of the following data sources provides the input a data warehouse needs to perform analyses and generate reports?
A)Online analytical processing systems
B)Online transaction processing systems
C)Enterprise resource planning systems
D)Data mining analysis systems

Accepted Answer

The answer of Which of the following data sources provides...

Quiz 3: Database Systems,Data Warehouses,and Data Marts

The data _____ component of a database management system (DBMS) is used for tasks such as backup and recovery,security,and change management.

In data warehouses,_____ is information about data-its content,quality,condition,origin,and other characteristics.

In data warehouses,_____ gives users subtotals of various categories,which can be useful.

In data warehouses,_____ is information in its original form.

The _____ operator,discussed in data manipulation,is used when all the conditions in a query by example (QBE) form are required to be met.

In the context of data administration component,the acronym CRUD stands for _____.

Data warehouses are sometimes called "hypercubes" because they _____.

The _____ component of a database management system (DBMS) is responsible for data storage,manipulation,and retrieval.

The component that is used to design elements of an application using a database,such as data entry screens,interactive menus,and interfaces,with other programming languages is the _____ component.

The _____ component of a database management system (DBMS) is used to add,delete,modify,and retrieve records from a database.

The _____ approach,used to set up a distributed database management system (DDBMS) ,combines fragmentation and replication.

In a data warehouse,_____ means collecting data from a variety of sources and converting it into a format that can be used in transformation processing.

A database administrator is responsible for _____.

The _____ component of a database management system (DBMS) is used to create and maintain the data dictionary.

A data _____ is a collection of data from a variety of sources used to support decision-making applications and generate business intelligence.

A(n) _____ is not limited by the data's physical location.

A _____ is usually a smaller version of a data warehouse,used by a single department or function.

In well-designed data-driven Web sites,changes are made to the _____ code every time a Web site's data content changes.

In contrast to data in a database,discussed in data warehouses,the subject-oriented characteristic _____.

Which of the following data sources provides the input a data warehouse needs to perform analyses and generate reports?