Database Development Process Quiz
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Questions and Answers

What are the main components of a three-level architecture?

The main components are external level, conceptual level, and internal level.

What is data independence in the context of a database?

Data independence refers to the immunity of data from changes in the schema at the next higher level.

What is the purpose of a data dictionary in a database system?

The purpose of a data dictionary is to provide a centralized repository of information about data.

What is the difference between logical database design and physical database design?

<p>Logical database design focuses on the logical structure of the database, while physical database design deals with the implementation and optimization of the database.</p> Signup and view all the answers

What is the role of a Database Administrator (DBA) in a database system?

<p>The DBA is responsible for the overall management of the database, including security, performance, and integrity.</p> Signup and view all the answers

What are the main functions of a Database Management System (DBMS)?

<p>The main functions include data definition, data manipulation, data retrieval, and data control.</p> Signup and view all the answers

What does SQL stand for?

<p>Structured Query Language (A)</p> Signup and view all the answers

What is the primary function of a data dictionary in a database system?

<p>To define the structure of the database (A)</p> Signup and view all the answers

What is the role of a Database Administrator (DBA) in a database system?

<p>Managing and maintaining the database system (A)</p> Signup and view all the answers

What is the purpose of data independence in the context of a database?

<p>To shield application programs from changes in the database structure (D)</p> Signup and view all the answers

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