(Quiz) Basics in database systems

A database has the following implicit properties

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A database represents some aspect of the real world, sometimes called the miniworld or the universe of discourse (UoD). Changes to the miniworld are reflected in the database.

A database is a logically coherent collection of data with some inherent meaning. A random assortment of data cannot correctly be referred to as a database.

A database is designed, built, and populated with data for a specific purpose. It has an intended group of users and some preconceived applications in which these users are interested.

First and second properties

All first three properties

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Reflecting changes in business applications in database systems ensures they are a true reflection of the miniworld they represent

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True

False

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A database can only be big and complex

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True

False

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Which category of the following can be stored and managed in a database

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Contact names and numbers in your mobile phones consisting of only tens of records

List of books in a university library consisting of thousands of records

Details of billions of users registered in a social media platform

All of the above categories

None of the above options

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The DBMS is

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(1) that facilitates the processes of (2), (3), (4), and
(5) databases among various users and applications

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manipulating

defining

a general-purpose software system

constructing

sharing

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Data specification in the database includes

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data types

structures

constraints

all of the above

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The database definition or descriptive information is also stored by the DBMS in the form of a database catalog or dictionary; it is called meta-_________

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Missing

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__________ the database is the process of storing the data on some storage medium that is controlled by the DBMS

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Defining

Constructing

Manipulating

Sharing

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Complete the missing words

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Manipulating a database includes functions such as (1) the database to retrieve specific data, (2) the database to reflect changes in the miniworld, and (3) reports from the data

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updating

querying

generating

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Sharing a database allows multiple users and programs to access the database

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sequentially

simultaneously

two at a time

group of hundred users at a time

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An application program accesses the database by sending queries or transactions for data to the DBMS

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A (1) typically causes some data to be retrieved
A (2) may cause some data to be read and some data to be written into the database

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transaction

query

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A DBMS system does not need to provide protection and maintenance functions over a long period of time as it may be the responsibility of the storage or hardware boxes

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True

False

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Explanation

It is absolutely necessary to use general-purpose DBMS software to implement a computerized database

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True

False

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A database has the following implicit properties

Correct Answer

Explanation

Reflecting changes in business applications in database systems ensures they are a true reflection of the miniworld they represent

Correct Answer

Explanation

A database can only be big and complex

Correct Answer

Explanation

Which category of the following can be stored and managed in a database

Correct Answer

Explanation

The DBMS is

Correct Answer

Explanation

Data specification in the database includes

Correct Answer

Explanation

The database definition or descriptive information is also stored by the DBMS in the form of a database catalog or dictionary; it is called meta-_________

Correct Answer

Explanation

__________ the database is the process of storing the data on some storage medium that is controlled by the DBMS

Correct Answer

Explanation

Complete the missing words

Correct Answer

Explanation

Sharing a database allows multiple users and programs to access the database

Correct Answer

Explanation

An application program accesses the database by sending queries or transactions for data to the DBMS

Correct Answer

Explanation

A DBMS system does not need to provide protection and maintenance functions over a long period of time as it may be the responsibility of the storage or hardware boxes

Correct Answer

Explanation

It is absolutely necessary to use general-purpose DBMS software to implement a computerized database

Correct Answer

Explanation

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