Database Management Systems at Mbarara University Of Science And Technology | Flashcards & Summaries

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Lernmaterialien für database management systems an der Mbarara University of Science and Technology

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What is An Attribute
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A property that describes some aspect of the object that we wish to record
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What is a database
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A shared collection of logically related data and it's description designed to meet the information needs of an organization
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Outline the main approaches to managing requirements for a database
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  • Centralized approach
  • View integration
  • Combination of both
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Other names for attributes
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Column/Field/Relationship/Association
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What is data abstraction
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The process of changing the internal definition an object without affecting the users of the object 
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What is An Entity
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A distinct object in the organization that is to be represented in the database
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What is the purpose of Views
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  • Provides a powerful and flexible mechanism by hiding parts of the database from certain users.
  • Permits users to access data in a way that is customized to their needs.
  • Can simplify complex operations on the base relations.
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What is A relationship
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An association between entities
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What is a DBMS
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A software system that enables users to define ,create , maintain and control access to the database
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What is a file based approach
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A collection of application programs that perform services for the end-users.
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What is a file
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Is a collection of records which contains logically related data
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What is a View
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A subset of a database
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  • 31 Karteikarten
  • 23 Studierende
  • 0 Lernmaterialien

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Q:
What is An Attribute
A:
A property that describes some aspect of the object that we wish to record
Q:
What is a database
A:
A shared collection of logically related data and it's description designed to meet the information needs of an organization
Q:
Outline the main approaches to managing requirements for a database
A:
  • Centralized approach
  • View integration
  • Combination of both
Q:
Other names for attributes
A:
Column/Field/Relationship/Association
Q:
What is data abstraction
A:
The process of changing the internal definition an object without affecting the users of the object 
Mehr Karteikarten anzeigen
Q:
What is An Entity
A:
A distinct object in the organization that is to be represented in the database
Q:
What is the purpose of Views
A:
  • Provides a powerful and flexible mechanism by hiding parts of the database from certain users.
  • Permits users to access data in a way that is customized to their needs.
  • Can simplify complex operations on the base relations.
Q:
What is A relationship
A:
An association between entities
Q:
What is a DBMS
A:
A software system that enables users to define ,create , maintain and control access to the database
Q:
What is a file based approach
A:
A collection of application programs that perform services for the end-users.
Q:
What is a file
A:
Is a collection of records which contains logically related data
Q:
What is a View
A:
A subset of a database
database management systems

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