Questions and Answers
Most data that can be encountered are best classified as _____.
A desktop database is a _____ database.
A workgroup database is a(n) _____ database.
A _____ is a collection of related records.
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_____ serve as the intermediary between the user and the database.
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Which of the following refers to the situation where different versions of the same data are stored at different places because they weren't updated consistently?
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A(n) _____ database is used by an organization and supports many users across many departments.
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The database structure in a DBMS is stored as a _____.
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Data is said to be verifiable if:
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An XML database supports the storage and management of _____ XML data.
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_____ provide a description of the data characteristics and the set of relationships that link the data found within the database.
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_____ data exist in the format in which they were collected.
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The organization of data within folders in a manual file system is determined by _______.
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Accurate, relevant, and timely information is the key to ____.
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_____ are the result of formatting disorganized data in order to facilitate storage, use, and generation of information.
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_____ data exist in a format that does not lend itself to processing that yields information.
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Which of the following is true of spreadsheet applications?
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A(n) _____ might be written by a programmer or it might be created through a DBMS utility program.
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End-user data is _____.
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A _____ is a logically connected set of one or more fields that describes a person, place, or thing.
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The response of the DBMS to a query is the ___________
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_____ exists when different versions of the same data appear in different places.
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_____ is the body of information and facts about a specific subject.
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_____ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed.
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An operational database is sometimes referred to as an enterprise database.
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The only way to access the data in a database is through the DBMS.
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One disadvantage of the DBMS is that it increases the risk of data security breaches.
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Structural dependence exists when it is possible to make changes in the file structure without affecting the application program's ability to access the data.
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Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests.
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Data is the result of processing raw facts to reveal its meaning.
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Data processing can be as simple as organizing data to reveal patterns.
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Corporations use only structured data.
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An advantage of database systems is that you needn't perform frequent updates and apply latest patches.
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Data and information are essentially the same thing.
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Structure is based on the type of processing to be performed on the data.
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When data are entered into a form and saved, they are placed in the underlying database as knowledge.
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Information is produced by processing ____.
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_____ exists when the same data are stored unnecessarily at different places.
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When a database stores the majority of data in RAM rather than in hard disks, it is referred to as a(n) _____ database.
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A(n) _____ is a spur-of-the-moment question.
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_____ is a special language used to represent and manipulate data elements in a textual format.
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_____ exists when it is possible to make changes in the data storage characteristics without affecting an application program's ability to access data.
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A(n) _____ is a specific request issued to the DBMS for data manipulation.
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To reveal meaning, information requires ____.
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Raw data must be properly _____ for storage, processing, and presentation.
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A(n) _____ develops when all required changes in the redundant data are not made successfully.
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A(n) _____ is a collection of programs that manages the database structure and controls access to the data stored in the database.
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_____ relates to activities that make a database operate more efficiently in terms of storage and access speed.
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Study Notes
Database Classifications
- Most data is classified as semistructured.
- A desktop database operates as a single-user database, ideal for individual use.
- A workgroup database supports multiple users, functioning as a multiuser database.
Database Structures and Components
- A file is a collection of related records within a database.
- Database Management Systems (DBMSs) act as intermediaries between users and databases.
- A collection of files stores the database structure in a DBMS.
Data Integrity and Types
- Data redundancy occurs when different versions of the same data exist at multiple locations.
- An enterprise database is used organization-wide and supports many departments.
- Verifiable data yields consistent results and is essential for data integrity.
Data Formats
- XML databases manage semistructured XML data effectively.
- Unstructured data exists in its original collection format without processing.
Data Management Concepts
- Metadata describes data characteristics and relationships in the database.
- Accurate, relevant, and timely information is crucial for effective decision-making.
- Structured data results from organizing disorganized data for better storage and use.
Applications and Queries
- Spreadsheet applications enhance the user's ability to interpret data rather than serve as databases.
- An application can be created through a DBMS utility or written by a programmer.
- A query generates a query result set from the DBMS in response to user requests.
Data and Knowledge
- End-user data consists of raw facts relevant to the user.
- Knowledge represents the accumulated information and facts about a specific subject.
Performance and Dependencies
- Performance tuning improves database execution efficiency regarding storage and access speed.
- Structural independence allows changes in file structures without affecting application access.
Data Processing and Anomalies
- Data processing can reveal patterns through simple logical organization.
- A data anomaly occurs when changes in redundant data are incomplete or unsuccessful.
Access and Storage
- Access to database data solely relies on the DBMS.
- In-memory databases store most data in RAM for faster access.
Other Key Concepts
- An ad hoc query is generated spontaneously for immediate data request needs.
- Extensible Markup Language (XML) facilitates data representation in a textual format.
- Data independence permits modifications in storage features while maintaining application access consistency.
Studying That Suits You
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Description
Test your knowledge of key concepts in Chapter 1 of Database Systems with these flashcards. Each card presents a term and its corresponding definition, focusing on different types and classifications of databases. Perfect for quick review or preparation for exams.
