Questions and Answers
What is an ad hoc query?
A spur-of-the-moment question.
What is a centralized database?
A database located at a single site.
What is data?
Raw facts that have not yet been processed to reveal their meaning.
What is a data anomaly?
Signup and view all the answers
What is data dependence?
Signup and view all the answers
What is a data dictionary?
Signup and view all the answers
What is data inconsistency?
Signup and view all the answers
What is data independence?
Signup and view all the answers
What is data integrity?
Signup and view all the answers
What is data management?
Signup and view all the answers
What is data quality?
Signup and view all the answers
What is data redundancy?
Signup and view all the answers
What is a data warehouse?
Signup and view all the answers
What is a database?
Signup and view all the answers
What is database design?
Signup and view all the answers
What is a database management system (DBMS)?
Signup and view all the answers
What is a database system?
Signup and view all the answers
What is a desktop database?
Signup and view all the answers
What is a distributed database?
Signup and view all the answers
What is an enterprise database?
Signup and view all the answers
What is Extensible Markup Language (XML)?
Signup and view all the answers
What is a field?
Signup and view all the answers
What is a file?
Signup and view all the answers
What is information?
Signup and view all the answers
What are islands of information?
Signup and view all the answers
What is knowledge?
Signup and view all the answers
What is a logical data format?
Signup and view all the answers
What is metadata?
Signup and view all the answers
What is a multiuser database?
Signup and view all the answers
What is an operational database?
Signup and view all the answers
What is performance tuning?
Signup and view all the answers
What is a physical data format?
Signup and view all the answers
What is a production database?
Signup and view all the answers
What is a query?
Signup and view all the answers
What is a query language?
Signup and view all the answers
What is a query result set?
Signup and view all the answers
What is a record?
Signup and view all the answers
What is semistructured data?
Signup and view all the answers
What is a single-user database?
Signup and view all the answers
What is structural dependence?
Signup and view all the answers
What is structural independence?
Signup and view all the answers
What is structured data?
Signup and view all the answers
What is Structured Query Language (SQL)?
Signup and view all the answers
What is a transactional database?
Signup and view all the answers
What is unstructured data?
Signup and view all the answers
What is a workgroup database?
Signup and view all the answers
What is an XML database?
Signup and view all the answers
Study Notes
Database Key Terms
- Ad hoc query: Refers to an unplanned, spontaneous query posed by a user.
- Centralized database: A database that is situated at a single location, facilitating easier management and access.
- Data: The raw, unprocessed facts that require further interpretation to extract meaning.
- Data anomaly: Occurs when inconsistent changes are made to a database, leading to discrepancies across files (e.g., an employee's address updated in one file but not others).
- Data dependence: The state where the format and manipulation of data are linked to the specific physical storage characteristics.
- Data dictionary: A component of a Database Management System (DBMS) that holds metadata, defining data elements and their relationships.
- Data inconsistency: The scenario where variations in data versions produce differing outputs or results.
- Data independence: Exists when modifications in physical data storage do not impact data access methods.
- Data integrity: Ensures that data in a relational database adheres to all required constraints, maintaining accuracy and consistency.
- Data management: Involves the processes of data collection, storage, retrieval, and manipulation, including addition, deletion, and modification.
- Data quality: A holistic approach to maintaining the accuracy, validity, and timeliness of data within a system.
- Data redundancy: Occurs when unnecessary duplication of data exists within a database environment.
- Data warehouse: Defined by Bill Inmon as an integrated, subject-oriented, time-variant, and non-volatile data collection aiding decision-making.
- Database: A shared structure encompassing related data, consisting of end-user data and metadata which gives context to the data.
- Database design: The phase in the Database Life Cycle that establishes the structure and components of the database.
- Database Management System (DBMS): A collection of programs that oversee the database structure and manage data access.
- Database system: An organized set of components that regulates the storage, management, and utilization of data within a database environment.
- Desktop database: A single-user database designed to run on personal computers.
- Distributed database: A related database distributed across two or more physical locations, enhancing data access and redundancy.
- Enterprise database: Represents the comprehensive data structure of an organization, catering to both current and future information needs.
- Extensible Markup Language (XML): A markup language used for representing and manipulating data elements, especially for structured document exchanges over the Internet.
- Field: Represents a characteristic of an entity, composed of characters or numbers (e.g., Social Security Number, address).
- File: A designated collection of related records, serving as an organizational unit within a database.
- Information: Produced from data processing, revealing meaningful insights and aiding in decision-making.
- Islands of information: Refers to isolated, often duplicated data pools managed by various organizational departments leading to inconsistency.
- Knowledge: Represents familiarity and understanding of information within a specific context, enabling the derivation of new insights from existing data.
- Logical data format: The interpretation of data as viewed by humans.
- Metadata: Information describing other data, detailing characteristics and relationships.
- Multiuser database: Supports multiple users concurrently accessing and working on the database.
- Operational database: Primarily designed to support the daily operations of a company.
- Performance tuning: Activities aimed at enhancing database efficiency regarding storage and access speeds.
- Physical data format: How data is stored on a computer, which is often not visible to users.
- Production database: The principal database utilized for tracking daily company operations.
- Query: A user-generated request for data manipulation expressed in SQL code.
- Query language: Nonprocedural languages (like SQL) employed by DBMS to manage data.
- Query result set: The output collection of data rows returned from executing a query.
- Record: A group of related fields that form a single entry in a database.
- Semistructured data: Data that has undergone some processing, rendering it partially organized.
- Single-user database: A database designed for use by one individual at a time.
- Structural dependence: Exists when changes in schema necessitate updates in all access programs due to impact on data access.
- Structural independence: Characterizes a setup where schema changes do not influence data access methods.
- Structured data: Data formatted for ease of storage and processing.
- Structured Query Language (SQL): A powerful relational language for creating database structures, performing data manipulation, and querying databases to extract information.
- Transactional database: A database that tracks daily transactions of an organization.
- Unstructured data: Data in its original, raw form as initially collected.
- Workgroup database: A multiuser database intended for limited users, typically under 50, often serving a specific department.
- XML database: A database system dedicated to storing and managing semistructured XML data.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge with flashcards covering key terms and definitions from Chapter 1 of Database Systems. This set includes essential concepts like ad hoc queries, centralized databases, and data anomalies to help reinforce your understanding of the subject.