Podcast
Questions and Answers
Which term accurately describes raw facts, text, graphics, images, sound, and video segments?
Which term accurately describes raw facts, text, graphics, images, sound, and video segments?
- Database
- Metadata
- Information
- Data (correct)
In a data hierarchy, a record represents a collection of related data fields.
In a data hierarchy, a record represents a collection of related data fields.
True (A)
What is the smallest, indivisible unit of data in the data hierarchy?
What is the smallest, indivisible unit of data in the data hierarchy?
bit
A byte consists of ______ bits.
A byte consists of ______ bits.
Which level of the data hierarchy is a set of related records?
Which level of the data hierarchy is a set of related records?
A database is best described as a disorganized collection of unrelated data.
A database is best described as a disorganized collection of unrelated data.
What term refers to 'data about data,' including data types and field sizes?
What term refers to 'data about data,' including data types and field sizes?
Which of the following is NOT a disadvantage of traditional file processing systems?
Which of the following is NOT a disadvantage of traditional file processing systems?
Match the following terms related to data storage.
Match the following terms related to data storage.
Which of the following factors poses a significant risk or cost associated with the database approach regarding personnel aspects?
Which of the following factors poses a significant risk or cost associated with the database approach regarding personnel aspects?
Flashcards
What is data?
What is data?
Raw facts, text, graphics, images, sound, and video segments.
What is information?
What is information?
Data processed to be useful in decision making.
What is a record?
What is a record?
A collection of related data fields.
What is a bit?
What is a bit?
Signup and view all the flashcards
What is a field?
What is a field?
Signup and view all the flashcards
What is a file?
What is a file?
Signup and view all the flashcards
What is a database?
What is a database?
Signup and view all the flashcards
What is Metadata?
What is Metadata?
Signup and view all the flashcards
Database approach advantage?
Database approach advantage?
Signup and view all the flashcards
What is a DBMS?
What is a DBMS?
Signup and view all the flashcards
Study Notes
- Data is raw facts, text, graphics, images, sound, and video segments.
- Information is data processed to be useful in decision making.
- In the data hierarchy, a record is a collection of related data fields.
- The smallest unit of data in the data hierarchy is a bit.
- A byte consists of 8 bits.
- The level in the data hierarchy that represents one aspect of a business object is a field (column or attribute).
- A file is a collection of related records.
- A database is an organized collection of logically related data.
- Metadata describes data, including descriptions such as data types, field sizes, and allowable values.
- Improved Data Sharing is not a disadvantage of traditional file processing systems.
- Traditional file processing systems typically lead to excessive program maintenance.
- Improved data sharing among users is a key advantage of the database approach.
- The database approach achieves independence of data formats because metadata is stored in a repository.
- The database approach can lead to improved data quality because constraints and data validation rules are enforced.
- Improved data sharing allows different users to see different views of the same data in the database approach.
- One risk or cost associated with the database approach related to personnel is that it requires new, specialized personnel.
- A Database Management System (DBMS) is a collection of programs that enables users to create and maintain a database.
- In a DBMS, metadata is stored in a repository, which supports program-data independence.
- A DBMS manages data resources similarly to how an operating system manages hardware resources.
- The primary function of a DBMS is to facilitate defining, constructing, manipulating, and sharing databases among various users and applications.
- Traditional file processing systems store data in separate files, often resulting in data redundancy and data isolation.
- Data redundancy means that there are duplicate copies of the same data in different systems or programs.
- Unplanned duplication of data often found in traditional file processing systems is data redundancy.
- When each department maintains its own files in a file processing system, it generally leads to limited data sharing across the organization.
- Excessive program maintenance is a disadvantage of traditional file processing systems.
- An advantage of the database approach that contributes directly to improved decision support is that databases are expressly designed for decision support applications.
- An advantage of the database approach is increased productivity of application development.
- The database approach enforces standards by ensuring that all data access is done in the same way.
- An ongoing cost associated with the database approach is the requirement for new, specialized personnel.
- A personal database application is typically designed for use on a standalone desktop computer by a single user.
- A workgroup database application is typically used on a local area network (LAN) for fewer than 25 users.
- An enterprise database application is used by hundreds or thousands of users across a wide-area network.
- The flat file database system model was common during the 1960s.
- The hierarchical database model organizes data in a tree-like structure and is typically confined to one-to-many relationships.
- Unlike the hierarchical model, the network database model permits many-to-many relationships.
- The relational database model organizes data in tables (or entities) and uses common fields to establish relationships between them.
- The object-oriented database system model represents information by encapsulating both data and behavior.
- The object-relational database model is considered a middle ground between relational and object-oriented databases.
- The NoSQL database system model was introduced in the early 2000s to address the challenges of Big Data.
- A data warehouse is a subject-oriented, integrated, time-variant, and non-volatile collection of data used in support of management decision making.
- Time-variant and non-volatile characteristics of a data warehouse ensure that historical data is maintained without alteration.
- In the context of data warehouses, "integrated" means combining data from multiple sources into a uniform format.
- A web-enabled database is accessed remotely via a web-based interface.
- The evolution of database systems did not begin with relational databases in the 1960s.
- Flat file databases cannot be considered relational databases.
- In the context of relational databases, another term used for a record is a record (or tuple).
- Allowable values specification within metadata specifies the allowable values for data fields.
- Program-data dependence in traditional file processing systems means that each program must maintain its own metadata for the files it uses.
- Centralized shared data in a database environment means that data is stored in a central repository accessible to various applications.
- The key system in the database environment that not only stores data but also manages access, modifications, and security is a Database Management System (DBMS).
- Summarized data represents aggregated or processed data (such as counts or percentages) used for decision making.
- The student population graph represents the number of students over a series of years, showing trends in enrollment.
- The components of the database environment are DBMS and metadata repository.
- A benefit of planned data redundancy in a database approach is increased data integrity/consistency.
- The database approach does not eliminate all upfront and ongoing costs associated with data management.
- Flat files would be most suitable for a system that primarily needs to store and retrieve data without complex relationships.
- In the evolution of database systems, both object-oriented and object-relational databases emerged in the 1990s.
- Constraints and data validation rules in a database ensures data quality by enforcing defined standards
- Program-Data Independence means that applications can access data without needing to manage its format because metadata is stored in a repository
- An enterprise database supports hundreds or thousands of users across a wide-area network, whereas a departmental database serves 25–100 users on a local area network.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
