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Questions and Answers
What is the main function of a Database Management System?
What is the main function of a Database Management System?
Which type of databases stores real-time data and allows active processing of information?
Which type of databases stores real-time data and allows active processing of information?
What is the purpose of metadata in a database?
What is the purpose of metadata in a database?
What does a traditional application database mainly consist of?
What does a traditional application database mainly consist of?
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What is the definition of 'data' in the context of databases?
What is the definition of 'data' in the context of databases?
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What is the explicit function of an organized collection of logically related data in a computerized system?
What is the explicit function of an organized collection of logically related data in a computerized system?
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What is the process of defining a database called?
What is the process of defining a database called?
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In a relational database, what is a common field between tables called?
In a relational database, what is a common field between tables called?
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What is the purpose of a DBMS catalog in a database system?
What is the purpose of a DBMS catalog in a database system?
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What are the main characteristics of a database approach?
What are the main characteristics of a database approach?
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What is the storage of descriptive information by the DBMS in the form of a database catalog called?
What is the storage of descriptive information by the DBMS in the form of a database catalog called?
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In a relational database, what is the primary key of one table represented in a second table called?
In a relational database, what is the primary key of one table represented in a second table called?
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What is the process of storing the data on some storage medium that is controlled by the DBMS?
What is the process of storing the data on some storage medium that is controlled by the DBMS?
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What is a collection of tables related to one another based on a common field in a relational database called?
What is a collection of tables related to one another based on a common field in a relational database called?
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What does a Database Management System (DBMS) facilitate?
What does a Database Management System (DBMS) facilitate?
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What is the explicit purpose of an organized collection of logically related data in a computerized system?
What is the explicit purpose of an organized collection of logically related data in a computerized system?
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What is the function of metadata in the context of databases?
What is the function of metadata in the context of databases?
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What type of databases stores real-time data and allows active processing of information?
What type of databases stores real-time data and allows active processing of information?
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What is the definition of 'data' in the context of databases?
What is the definition of 'data' in the context of databases?
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What are the main characteristics of a database approach?
What are the main characteristics of a database approach?
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What is the process of defining a database called?
What is the process of defining a database called?
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What is the term for the descriptive information stored by the DBMS in the form of a database catalog or dictionary?
What is the term for the descriptive information stored by the DBMS in the form of a database catalog or dictionary?
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In a relational database, what is a common field between tables called?
In a relational database, what is a common field between tables called?
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What type of database is a collection of tables that are related to one another based on a common field?
What type of database is a collection of tables that are related to one another based on a common field?
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What is the term for the process of storing the data on some storage medium that is controlled by the DBMS?
What is the term for the process of storing the data on some storage medium that is controlled by the DBMS?
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What are the main characteristics of a database approach?
What are the main characteristics of a database approach?
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What is the term for descriptions of the properties or characteristics of the data, including data types, field sizes, allowable values, and documentation?
What is the term for descriptions of the properties or characteristics of the data, including data types, field sizes, allowable values, and documentation?
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What is the term for a unique identifier in the data model of a relational database?
What is the term for a unique identifier in the data model of a relational database?
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What type of system involves specifying the data types, structures, and constraints of the data to be stored in the database?
What type of system involves specifying the data types, structures, and constraints of the data to be stored in the database?
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What are some mini-world entities in the example of a database provided?
What are some mini-world entities in the example of a database provided?
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Study Notes
Database Management System (DBMS)
- The main function of a DBMS is to manage and provide access to a database.
- A DBMS facilitates the creation, modification, and querying of databases.
Real-time Database
- A real-time database stores real-time data and allows active processing of information.
- It is a type of database that is designed to handle large amounts of data and provide fast access to it.
Metadata
- Metadata is used to describe the properties or characteristics of the data, including data types, field sizes, allowable values, and documentation.
- The purpose of metadata is to provide information about the data in the database.
Traditional Application Database
- A traditional application database mainly consists of data that is used by a specific application or system.
- It is a type of database that is designed to support a specific application or system.
Data Definition
- The process of defining a database is called data definition.
- It involves specifying the data types, structures, and constraints of the data to be stored in the database.
Relational Database
- A common field between tables in a relational database is called a foreign key.
- The primary key of one table represented in a second table is called a foreign key.
DBMS Catalog
- The DBMS catalog is a repository of metadata that describes the database.
- It stores descriptive information about the database, such as data types, field sizes, and allowable values.
Database Approach
- The main characteristics of a database approach are:
- Self-describing data
- Integrated data
- Shared data
- Data independence
- Data redundancy control
- Data security
Data Storage
- The process of storing the data on some storage medium that is controlled by the DBMS is called data storage.
- It involves storing the data in a physical location, such as a hard drive or solid-state drive.
Relational Database Schema
- A collection of tables related to one another based on a common field is called a relational database schema.
- It is a type of database design that is used to organize and structure data.
Data
- The definition of 'data' in the context of databases is:
- A collection of facts, concepts, or instructions in a formalized manner, suitable for communication, interpretation, or processing by humans or computers.
- It is the raw material that is stored in a database.
Foreign Key
- A foreign key is a field in a table that refers to the primary key of another table.
- It is used to establish relationships between tables in a relational database.
Primary Key
- A primary key is a unique identifier in the data model of a relational database.
- It is used to uniquely identify each record in a table.
Mini-World Entities
- Mini-world entities are objects, concepts, or events that are of interest to a particular database.
- Examples of mini-world entities include customers, orders, products, and employees.
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Description
Test your knowledge on the essentials of database management with a focus on the database environment, development process, types of databases, and database applications according to Jeffrey A. Hoffer, Heikki Topi, V. Ramesh's book.
